[1] McGill Univ, CIET PRAM Dept Family Med, Montreal, PQ, Canada
[2] Univ Rosario, Escuela Med & Ciencias Salud, Bogota, Colombia
[3] CIETtrust, Gaborone, Botswana
[4] Univ Autonoma Guerrero, Ctr Invest Enfermedades Trop, Acapulco, Mexico
[5] McGill Univ, Dept Family Med, 5858 Ch Cote Des Neiges, Montreal, PQ H3S 1Z1, Canada