[1] Fdn Univ Autonoma Amer, Fac Med, Grp Invest Biomed, Pereira, Risaralda, Colombia
[2] Univ Cient Sur, Clin Epidemiol & Biostat, Lima, Peru
[3] Univ Privada Franz Tamayo UNIFRANZ, Sch Med, Cochabamba, Bolivia
[4] Univ Nacl San Agustin de Arequipa, Fac Med Humana, Arequipa, Peru
[5] Soc Cient Estudiantes Med Agustinos SOCIEMA, Arequipa, Peru
[6] Univ Nacl Jorge Basadre Grohomann, Fac Med Humana, Tacna, Peru
[7] Soc Cient Basadrina Estudiantes Med Humana SOCIBE, Tacna, Peru
[8] Univ San Martin de Porres, Fac Med Humana, Chiclayo, Peru
[9] Soc Cient Med Estudiantil Peruana, Lima, Peru
[10] Soc Cient Estudiantes Med Veritas SCIEMVE, Chiclayo, Peru
[11] Univ Peruana Union, Fac Med Humana, Lima, Peru
[12] Soc Cient Estudiantes Med SOCEM UPEU, Lima, Peru
[13] Univ Cient Sur, Fac Med Humana, Lima, Peru
[14] Univ Cient Sur SCIEM UCSUR, Soc Cient Estudiantes Med, Lima, Peru
[15] Univ Privada Tacna, Ctr Invest Estudiantes Med, Tacna, Peru
[16] Univ Nacl Federico Villarreal, Fac Med, Lima, Peru
[17] Soc Cient Estudiantes Med Villarrealinos SOCEMVI, Lima, Peru