[1] Univ Oslo, Dept Gen Practice, HELSAM, POB 1130, N-0318 Oslo, Norway
[2] Univ Oslo, Dept Gen Practice, Res Unit Gen Practice, HELSAM, Oslo, Norway
[3] Univ Bergen, Dept Global Publ Hlth & Primary Care, Bergen, Norway
[4] UiT Arctic Univ Norway, Dept Community Med, Tromso, Norway
[5] NORCE Norwegian Res Ctr, Res Unit Gen Practice, Bergen, Norway
[6] Norwegian Univ Sci & Technol, Fac Med & Hlth Sci, Dept Publ Hlth & Nursing, Res Unit Gen Practice, Trondheim, Norway
[7] Medrave Software AS, Tonsberg, Norway
[8] Univ Hosp North Norway, Norwegian Ctr E Hlth Res, Tromso, Norway