Antonsen J, Hansen S, Morgen CS, Jess T, Jørgensen LN, Allin KH. Antibiotics during childhood and development of appendicitis-a nationwide cohort study. Aliment Pharmacol Ther 2021;53:87-93.

Attauabi M, Poulsen A, Theede K, Pedersen N, Larsen L, Jess T, Rosager Hansen M, Verner-Andersen MK, V Haderslev K, Berg Lødrup A, Molazahi A, Neumann A, Wase A, Seidelin JB, Burisch J. Prevalence and outcomes of COVID-19 among patients with inflammatory bowel disease - a Danish prospective population-based cohort study. J Crohns Colitis 2021;15:540-50.

Berner-Hansen V, Oma E, Willaume M, Jensen KK. Prophylactic negative pressure wound therapy after open ventral hernia repair: a systematic review and meta-analysis. Hernia 2021;25:1481-90.

Capion SC, Jørgensen HBL, Ågren MS, Daugaard H, Ribel-Madsen S, Marando D, Johansson PI, Salado J, Halschou-Jensen PM, Borgwardt A, Andersen JR. The wound healing effect of local leukocyte platelet-rich plasma after total hip arthroplasty: A randomized controlled trial. Wound Repair Regen 2021;29:988-95.

COVIDSurg Collaborative (inkl. Ebbehøj A, Krarup P-M, Schlesinger NH, Smith HG). Preoperative nasopharyngeal swab testing and postoperative pulmonary complications in patients undergoing elective surgery during the SARS-CoV-2 pandemic. Br J Surg 2021;108:88-96.

COVIDSurg Collaborative (inkl. Ebbehøj A, Krarup P-M, Schlesinger NH, Smith HG). Elective cancer surgery in COVID-19-free surgical pathways during the SARS-CoV-2 pandemic: An international, multicenter, comparative cohort study. J Clin Oncol 2021;39:66-78.

COVIDSurg Collaborative and GlobalSurg Collaborative (inkl. Bonde P, Ebbehøj AL, Jørgensen LN, Krarup P-M, Schlesinger N, Smith HG). Timing of surgery following SARS-CoV-2 infection: An international prospective cohort study. Anaesthesia 2021;76:748-8.

COVIDSurg Collaborative, GlobalSurg Collaborative (inkl. Bonde P, Ebbehøj AL, Jørgensen LN, Krarup P-M, Schlesinger N). SARS-CoV-2 vaccination modelling for safe surgery to save lives: data from an international prospective cohort study. Br J Surg 108:1056-63.

COVIDSurg Collaborative (inkl. Smith HG). Machine learning risk prediction of mortality for patients undergoing surgery with perioperative SARS-CoV-2: the COVIDSurg mortality score. Br J Surg 2021;108:1274-92.

COVIDSurg Collaborative; GlobalSurg Collaborative (inkl. Bonde P, Ebbehøj AL, Jørgensen LN, Krarup P-M, Schlesinger N, Smith HG). Effects of pre-operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study. Anaesthesia 2021;76:1454-64.

COVIDSurg Collaborative (inkl. Ebbehøj AL, Krarup P-M, Schlesinger N, Smith HG). Effect of COVID-19 pandemic lockdowns on planned cancer surgery for 15 tumour types in 61 countries: an international, prospective, cohort study. Lancet Oncol 2021;22:1507-17.

COVIDSurg Collaborative (inkl. Smith HG). Outcomes after perioperative SARS-CoV-2 infection in patients with proximal femoral fractures: an international cohort study. BMJ Open 2021;11:e050830.

COVIDSurg Collaborative (inkl. Ebbehøj A, Krarup P-M, Schlesinger NH, Smith HG). Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic. Colorectal Dis 2021;23:732-49.

Diab HMH, Smith HG, Jensen KK, Jørgensen LN. The current role of blood-based biomarkers in surgical decision-making in patients with localised pancreatic cancer: A systematic review. Eur J Cancer 2021;154:73-81.

Dige A, Nordholm-Carstensen A, Hagen K, Hougaard HT, Krogh K, Agnholt J, Pedersen BG, Lundby L. Effectiveness of infliximab treatment of complex idiopathic anal fistulas. Scand J Gastroenterol 2021;22:1-6.

Dressler J, Johnsen AT, Madsen LJ, Rasmussen M, Jørgensen LN. Factors affecting patient adherence to publicly funded colorectal cancer screening programmes: a systematic review. Public Health 2021;190:67-74.

Ebbehøj AL, Sparre P, Jensen KK. Recovery after laparoscopic parastomal hernia repair. Surg Endosc 2021;35:2178-85.

Ebbehøj AL, Sparre P, Jensen KK, Jørgensen LN. Mesh fracture as a cause for recurrence in laparoscopic Sugarbaker parastomal hernia repair: a case series. Laparasc Surg 2021;5:15.

Ebbehøj AL, Jørgensen LN, Krarup PM, Smith HG. Histopathological risk factors for lymph node metastases in T1 colorectal cancer: meta-analysis. Br J Surg 2021;108:769-76.

Ebrahim M, Larsen PB, Hannani D, Liest S, Jørgensen LN, Jørgensen HL. Preoperative risk factors including serum levels of potassium, sodium, and creatinine for early mortality after open abdominal surgery: a retrospective cohort study. BMC Surg 2021;21:62.

Egenvall M, Martling A, Veres K, Horváth-Puhó E, Wille-Jørgensen P, Høirup Petersen S, Laurberg S, Sørensen HT, Syk I; COLOFOL Study Group. No benefit of more intense follow-up after surgery for colorectal cancer in the risk group with elevated CEA levels - An analysis within the COLOFOL randomized clinical trial. Eur J Surg Oncol 2021;47:2053-59.

Engjom T, Nordaas IK, Tjora E, Dimcevski G, Haldorsen IS, Olesen SS, Drewes AM, Zviniene K, Barauskas G, Riis Jespersen HS, Jensen N, Borch A, Nøjgaard C, Novovic S, Kardasheva SS, Okhlobystin A, Hauge T, Waage A, Frøkjær JB. Aetiological risk factors are associated with distinct imaging findings in patients with chronic pancreatitis: A study of 959 cases from the Scandinavian Baltic Pancreatic Club (SBPC) imaging database. Pancreatology 2021;21:688-97.

Hasselager R, Bang Foss N, Andersen O, Cihoric M, Bay-Nielsen M, Nielsen HJ, Camilla Andresen L, Toft Tengberg L. Mortality and major complications after emergency laparotomy: A pilot study of risk prediction model development by preoperative blood-based immune parameters. Acta Anaesthesiol Scand 2021;65:151-61.

Henriksen NA, Friis-Andersen H, Jørgensen LN, Helgstrand F on behalf of the Danish Hernia Database. Open versus laparoscopic incisional hernia repair: nationwide database study. BJS Open 2021;5:zraa010.

Højen AA, Overvad TF, Nybo M, Kümler T, Rasmussen MS, Christensen TD, Larsen TB. Management of cancer-associated venous thrombosis: a nationwide survey among Danish oncologists. TH Open 2021;5:e188-e194.

Juul N, Henriksen NA, Jensen KK. Increased risk of postoperative complications with retromuscular mesh placement in emergency incisional hernia repair: A nationwide register-based cohort study. Scand J Surg 110:193-8.

Kjærgaard S, Jensen TSR, Feddersen UR, Bindslev N, Grunddal KV, Poulsen SS, Rasmussen HB, Budtz-Jørgensen E, Berner-Hansen M. Decreased number of colonic tuft cells in quiescent ulcerative colitis patients. Eur J Gastroenterol Hepatol 2021;33:817-24.

Knoph CS, Cook ME, Fjelsted CA, Novovic S, Mortensen MB, Nielsen LBJ, Hansen MB, Frøkjær JB, Olesen SS, Drewes AM. Effects of the peripherally acting μ-opioid receptor antagonist methylnaltrexone on acute pancreatitis severity: study protocol for a multicentre double-blind randomised placebo-controlled interventional trial, the PAMORA-AP trial. Trials 2021;22:940.

Kort A, Lydom LN, Salling LN, Lauridsen SV, Esbensen BA, Kallemose T, Thomsen T. Nutritional intervention and health-related quality of life in patients undergoing radical cystectomy – a randomized controlled trial. Urologic Nursing; 2021;41:179-93.

Larsen NB, Larsen S, Adamsen S. Cross-contamination in gastrointestinal endoscopy. J Infect Dis Med 2021;6:1.

Larsen PB, Liest S, Hannani D, Jørgensen HL, Sørensen LT, Jørgensen LN. Preoperative hypoalbuminemia predicts early mortality following open abdominal surgery in patients above 60 years of age. Scand J Surg 2021;110:29-36.

Lode L, Oma E, Henriksen NA, Jensen KK. Enhanced recovery after abdominal wall reconstruction: a systematic review and meta-analysis. Surg Endosc 2021;35:514-23. 

Nissen NI, Kehlet S, Johansen AZ, Chen IM, Karsdal M, Johansen JS, Diab HMH, Jørgensen LN, Sun S, Manon-Jensen T, He Y, Langholm L, Willumsen N. Noninvasive prognostic biomarker potential of quantifying the propeptides of Type XI collagen alpha-1 chain (PRO-C11) in patients with pancreatic ductal adenocarcinoma. Int J Cancer 2021;149:228-38. 

Njor SH, Andersen B, Friis-Hansen L, de Haas N, Linnemann D, Nørgaard H, Roikjaer O, Søndergaard B, Rasmussen M. The optimal cut-off value in fit-based colorectal cancer screening: An observational study. Cancer Med 2021;10:1872-9.

Nordholm-Carstensen A, Perregaard H, Hagen KB, Krarup PM. Fistula Laser Closure (FiLaC™) for fistula-in-ano-yet another technique with 50% healing rates? Int J Colorectal Dis 2021;36:1831-7. 

Nordholm-Carstensen A, Hagen K. Ikke alt er hæmorroider. Om diagnostik og behandling af akutte anallidelser i almen praksis. Måendskr Prak Lægegern 2021;juni/juli:443-51. 

Oma E, Baastrup NN, Jensen KK. Should simultaneous stoma closure and incisional hernia repair be avoided? Hernia 2021;25:649-54. 

Oreskov KO, Jensen KK, Gögenur I, Godthaab C, Jørgensen AB, Oreskov JO, Burcharth J, Ekeloef S. Limited value of preoperative neutrophil-to-lymphocyte ratio to predict post-operative outcomes after major emergency abdominal surgery. Dan Med J 2021;68:A09200689.

Parker SG, Halligan S, Berrevoet F, de Beaux AC, East B, Eker HH, Jensen KK, Jørgensen LN, Montgomery A, Morales-Conde S, Miserez M, Renard Y, Sanders DL, Simons M, Slade D, Torkington J, Blackwell S, Dames N, Windsor ACJ, Mallett S. Reporting guideline for interventional trials of primary and incisional ventral hernia repair. Br J Surg 2021;108:1050-55.

Perregaard H, Tenma J, Antonsen J, Mynster T. Mortality after abdominal emergency surgery in nonagenarians. Eur J Trauma Emerg Surg 2021;47:485-92.

Perregaard H, Dalby HR, Hagen KB, Lundby L, Nordholm-Carstensen A. Kryptoglandulære analfistler. Ugeskr Læger 2021;183:V04210365.

Perregaard H, Hagen KB, Krarup PM, Nordholm-Carstensen A. Lateral internal sphincterotomy (LIS) using endoanal ultrasound. A video vignette. Colorectal Dis 2021;23:3038-39.

Rosenberg J, Friis-Andersen H, Jørgensen LN, Andresen K. Variables in the Danish Hernia Databases: inguinal and ventral. Laparosc Surg 2021:5:30.

Skovgaards DM, Diab HMH, Midtgaard HG, Jørgensen LN, Jensen KK. Causes of prolonged hospitalization after open incisional hernia repair: an observational single-center retrospective study of a prospective database. Hernia 2021;25:1027-34.

Smith HG, Jensen KK, Jørgensen LN, Krarup PM. Impact of the COVID-19 pandemic on the management of colorectal cancer in Denmark. BJS Open 2021;5:zrab108.

Türlü C, Willumsen N, Marando D, Schjerling P, Biskup E, Hannibal J, Jørgensen LN, Ågren MS. A human cellular model for colorectal anastomotic repair: the effect of localization and transforming growth factor-β1 treatment on collagen deposition and biomarkers. Int J Mol Sci 2021;22:1616.

Wang R, Danielsen PL, Ågren MS, Duke J, Wood F, Zeng X-X, Mao Y, Cen Y. Corticosteroid injection alone or combined with surgical excision of keloids versus other therapies including ionising radiotherapy: a systematic review and meta-analysis of randomised controlled trials. European Burn Journal 2021;2:41-54.  https://doi.org/10.3390/ebj2020004​

Wewer MD, Zhao M, Nordholm-Carstensen A, Weimers P, Seidelin JB, Burisch J. The incidence and disease course of perianal crohn's disease: a Danish nationwide cohort study, 1997-2015. J Crohns Colitis 2021;15:5-13.

Wilhelmsen M, Njor SH, Roikjær O, Rasmussen M, Gögenur I. Impact of screening on short-term mortality and morbidity following treatment for colorectal cancer. Scand J Surg 2021;110:465-71.

​Ågren MS, Chafranska L, Eriksen JO, Forman JL, Bjerrum MJ, Schjerling P, Larsen HF, Cottarelli E, Jørgensen LN, Gjerdrum LMR. Spatial expression of metallothionein, matrix metalloproteinase-1 and Ki-67 in human epidermal wounds treated with zinc and determined by quantitative immunohistochemistry: A randomised double-blind trial. Eur J Cell Biol 2021;100:151147.

Ågren MS, Phothong N, Burian EA, Mogensen M, Hædersdal M, Jørgensen LN. Topical zinc oxide assessed in two human wound-healing models. Acta Derm Venereol 2021;101:adv00465. 

Jensen KK. Incisional hernia: From diagnosis to long-term follow-up. ISBN: 978-87-973380-0-1. Doktordisputats forsvaret på Bispebjerg Hospital, Københavns Universitet d. 11. oktober 2021.

Ebrahim M​. Snapshots Quiz. Br J Surg 2021;108:1399

Jensen KK. Abdominal rectus diastasis: An ongoing debate about indication. Scand J Surg 2021;110:460-1.

Oma E, Jensen KK, Jørgensen LN. Comment to: Ventral hernia recurrence in women of childbearing age: a systematic review and meta-analysis. T. Nouh, F. S. Ali, K. J. Krause, I. Zaimi. Hernia 2021;25:233-4.

Attauabi M, Poulsen A et al. Outcomes of coronavirus disease 2019 among patients with inflammatory bowel diseases and the influence of IBD-related medications– A Danish prospective population-based cohort study. European Crohn´s and Colitis Organization Congress, København d. 8.-9. jul 2021 (poster).

Attauabi M, Poulsen A et al. Outcomes of coronavirus disease 2019 among patients with inflammatory bowel diseases and the influence of IBD-related medications– A Danish prospective population-based cohort study. United European Gastroenterology Week, Wien, Østrig d. 2.- 6. okt 2021 (poster).

Dressler J, Johnsen AT, Madsen LJ, Rasmussen M, Jørgensen LN. Factors affecting patient adherence to publicly funded colorectal cancer screening programs: a systematic review (poster). Dansk Kirurgisk Selskabs Årsmøde, København d. 18.-19 november 2021.

Goyal H et al. (includ. Adamsen S). How “dirty” are the endoscope channels? A systematic review and meta-analysis of reprocedssed endoscopes (poster).. Am J Gastroenterol 2021;116:S472-3. American College of Gastroenterology Congress, oktober 2021.

Goyal H et al. (includ. Adamsen S). Don´t blame the duodenoscope elevator, the channels are contaminated as well: a systematic review and meta-analysis (poster). Am J Gastroenterol 2021;116:S473. American College of Gastroenterology Congress, oktober 2021.

Jensen KK. Abdominal wall function after repair (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.

Jensen KK. Linea alba reconstruction is mandatory (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.

Jensen KK. Concomitant hernia repair in bowel surgery (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.

Jensen KK, Oma E. Det indeklemte incisionalhernie: Seneste data fra Dansk Herniedatabase og anbefalinger til håndtering (foredrag). Dansk Kirurgisk Selskabs Årsmøde, København d. 18.-19 november 2021.

Jørgensen LN. Indications and options for anterior component separation techniques. EHS: Fundamental of Abdominal Wall Surgery (web conference, foredrag) d. 7. - 8. juni 2021.

Jørgensen LN. Ventralherniedatabasens historie – en lang rejse (foredrag). Dansk Herniedatabase Årsmøde d. 9. juni 2021 København.

Jørgensen LN. Laparoscopic anterior component separation. 1st Online Meeting on Abdominal Wall (foredrag) d. 17.-18. juni 2021.

Jørgensen LN. Anterior component separation. Loss of Domain: Global Summit 2021 International Virtual Conference d. 14. august 2021.

Jørgensen LN. Surgical strategies – cases - voting (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.

Jørgensen LN. Highlights from the DHDB that changed clinical practice in Denmark (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.

Jørgensen LN. Mitigating risk – what´​s the evidence and what the guidelines suggest (foredrag). ANZ Abdominal Wall Reconstruction III Virtual Conference, d. 27. november 2021. 

Larsen S, Ockert LK, Katagiri N, Rindorf D, Adamsen S. Perceived contamination rates and contributing factors associated with reusable gastroscopes amongst Japanese endoscopists and procurement managers: A survey-based investigation (foredrag). Japan Digestive Disease Week 1 nov 2021, Kobe, Japan. 

Larsen S, Ockert LK, Katagiri N, Rindorf D, Adamsen S. Survey-based investigation of potential availability and degradation associated with reusable gastroscopes in Japan (foredrag). Japan Digestive Disease week 2 nov, 2021, Kobe, Japan. 

Larsen S, Larsen NB, Katagiri N, Ockert LK, Adamsen S. Contamination rates in patient-ready gastrointestinal endoscopes: A systematic review and meta-analysis based on Asian data (foredrag). Japan Digestive Disease Week 2. nov. 2021, Kobe, Japan.

Mikkelsen GK, Gerhardt S, Lausten A. Basispalliation i kirurgisk afdeling giver tryghed og kvalitet i plejen. Nyt til Klinikken 2020;3:52-6.

Oma E, Daes J, Jørgensen LN. Alterations in the abdominal wall musculature after endoscopic anterior and open posterior component separation (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.

Oma E, Daes J, Jørgensen LN. Alterations in the abdominal wall musculature (poster). Dansk Kirurgisk Selskabs Årsmøde, København d. 18.-19 november 2021.

Snitkjær C, Willaume M, KK Jensen, Kimer N, Helgstrand F, Gluud LL, Henriksen NA Higher risk of complications after umbilical hernia repair in patients with liver cirrhosis compared with other high-risk patients (foredrag). Dansk Kirurgisk Selskabs Årsmøde, København d. 18.-19 november 2021.

Zhao M, Bendtsen F, Munk-Petersen A, Larsen L, Jess T, Poulsen A et al. Outcomes of first-line biologicals in a multicenter prospective cohort of biological-naïve IBD patients – The Danish IBD Biobank Project. United European Gastroenterology Week, Wien, Østrig, d. 2.–6. oktober 2021 (poster).

Willaume M. Postoperative therapy – drains and binders (foredrag). HERNIA2021, The Joint Congress of EHS and AHS, d. 13. – 16. oktober 2021, København.