Svein Oskar Frigstad

Switching from originator infliximab to biosimilar CT-P13 compared with maintained treatment with originator infliximab (NOR-SWITCH): a 52-week, randomised, double-blind, non-inferiority trial

Kristin Kaasen Jørgensen, Inge Christoffer Olsen, Guro Løvik Goll et al. · The Lancet · 2017 · 806 citations

Pharmacy, Internal Medicine, Pharmacotherapy +11

Long‐term efficacy and safety of biosimilar infliximab (CT‐P13) after switching from originator infliximab: open‐label extension of the NOR‐SWITCH trial

Guro Løvik Goll, Kristin Kaasen Jørgensen, J. Sexton et al. · Journal of Internal Medicine · 2019 · 122 citations · Full text

Medicine, Internal Medicine, Pharmacotherapy +13

Real-Time Artificial Intelligence–Based Optical Diagnosis of Neoplastic Polyps during Colonoscopy

Ishita Barua, Paulina Wieszczy, Shin‐ei Kudo et al. · NEJM Evidence · 2022 · 112 citations

Medicine, Oncology, Pathology +17

Vitamin D deficiency in inflammatory bowel disease: prevalence and predictors in a Norwegian outpatient population

Svein Oskar Frigstad, Marte Lie Høivik, Jørgen Jahnsen et al. · Scandinavian Journal of Gastroenterology · 2016 · 103 citations · Full text

Medicine, Nutrition, Nutritional Sciences +14

Colorectal Cancer Screening With Repeated Fecal Immunochemical Test Versus Sigmoidoscopy: Baseline Results From a Randomized Trial

Kristin Ranheim Randel, Anna Lisa Schult, Edoardo Botteri et al. · Gastroenterology · 2020 · 99 citations · Full text

Medicine, Oncology, Preventive Medicine +17