[1] Hebrew Univ Jerusalem, Dept Family Med, Jerusalem, Israel
[2] Clalit Hlth Serv, Dept Family Med, Jerusalem, Israel
[3] Hebrew Univ Jerusalem, Fac Med, POB 12271, IL-9112102 Jerusalem, Israel
[4] Robert Graham Ctr Policy Studies Family Med & Pri, 1133 Connecticut Ave NW,Ste 1100, Washington, DC 20036 USA
[5] Univ Ljubljana, Dept Family Med, Fac Med, Poljanski Nasip 58, Ljubljana 1000, Slovenia
[6] Univ Washington, Family Med, Box 356390, Seattle, WA 98195 USA
[7] Georgetown Univ, Med Ctr, Sch Nursing & Hlth Studies, Dept Human Sci,Res Programs Family Med, Bldg D 240,4000 Reservoir Rd NW, Washington, DC 20007 USA