[1] Univ San Ignacio Loyola, Grp Peruano Invest Epidemiol, Unidad Generac & Sintesis Evidencias Salud, Cuzco, Peru
[2] Soc Cient San Fernando, Cuzco, Peru
[3] Univ Nacl Mayor San Marcos, Fac Med, Cuzco, Peru
[4] Univ Andina Cusco, Vicerrectorado Invest, Cuzco, Peru
[5] Univ Cient Sur, Direcc Gen Invest Desarrollo & Innovac, Lima, Peru
[6] Univ San Ignacio Loyola, Vicerrectorado Invest, Lima, Peru