[1] Lithuanian Univ Hlth Sci, Dept Family Med, LT-44307 Kaunas, Lithuania
[2] CIES, Managua, Nicaragua
[3] South Grp, Cochabamba, Bolivia
[4] Univ Cuenca, Cuenca, Ecuador
[5] ICAS, Managua, Nicaragua
[6] Univ Ghent, ICRH, Ghent, Belgium
[7] Univ Amsterdam, Amsterdam, Netherlands
[8] Univ Copenhagen, Fac Hlth & Med Sci, Copenhagen HIV Programme, DK-1168 Copenhagen, Denmark