[1] Univ Bretagne Occidentale, Dept Gen Practice, F-29238 Brest 3, France
[2] Assoc Italiana Med Famiglia AIMEF, Bologna, Italy
[3] Univ Med Gottingen, Abt Allgemeinmed, Gottingen, Germany
[4] Allgemein Med Hsch Hannover, Hannover, Germany
[5] Nicholas Copernicus Univ, Dept Family Doctor, Torun, Poland
[6] Inst Catala Salut, Barcelona, Spain
[7] Inst Univ Iinvestigacio Atencio Primaria IDIAP Jo, Barcelona, Spain
[8] Greek Assoc Gen Practitioners ELEGEIA, Thessaloniki, Greece
[9] Xerencia Atenc Primaria Vigo, Vigo, Spain
[10] Univ Manchester, NIHR Sch Primary Care Res, Manchester, Lancs, England
[11] Vrije Univ Amsterdam, Med Ctr, Dept Gen Practice, Amsterdam, Netherlands
[12] Univ Antwerp, Fac Med & Hlth Sci, Dept Primary & Interdisciplinary Care, Antwerp, Belgium
[13] Univ Bretagne Occidentale, Dept Publ Hlth, F-29238 Brest 3, France