THE SUBGROUP EFFECTS OF SURGICAL TREATMENT OF PATIENT WITH HAND OSTEOARTHRITIS - A PROTOCOL FOR AN INDIVIDUAL PATIENT DATA META-ANALYSIS IN THE OA TRIAL BANK. (April 2022) - Thissen, G.; Middelkoop van, M.; Colaris, J.; Selles, R.; Dziedzic, K.; Nicholls, E.; Bierma-Zeinstra, S.