[1] Helsinki Univ Hosp HUS, Primary Hlth Care Unit, Helsinki, Finland
[2] Folkhalsan Res Ctr, Helsinki, Finland
[3] Univ Helsinki, Dept Gen Practice & Primary Hlth Care, Helsinki, Finland
[4] Helsinki Univ Hosp, Helsinki, Finland
[5] Natl Univ Singapore, Dept Obstet & Gynecol, Singapore, Singapore
[6] Natl Univ Singapore, Human Potential Translat Res Programme Yong Loo L, Singapore, Singapore
[7] ASTAR, Singapore Inst Clin Sci SICS, Singapore, Singapore
[8] Univ Eastern Finland, Inst Publ Hlth & Clin Nutr, Kuopio, Finland
[9] Finnish Inst Hlth & Welf, Publ Hlth Promot Unit, Dept Publ Hlth Solut, Helsinki, Finland
[10] Univ Helsinki, Fac Med, Clinicum, Helsinki, Finland
[11] Oulu Univ Hosp, MRC Oulu, PEDEGO Res Unit, Oulu, Finland
[12] Univ Oulu, Oulu, Finland
[13] Norwegian Univ Sci & Technol, Dept Clin & Mol Med, Trondheim, Norway
[14] Univ Jyvaskyla, Gerontol Res Ctr, Jyvaskyla, Finland
[15] Univ Jyvaskyla, Fac Sport & Hlth Sci, Jyvaskyla, Finland
[16] Turku Univ Hosp, Dept Gen Practice, Turku, Finland
[17] Univ Turku, Turku, Finland