[1] Johns Hopkins Univ, Div Pulm & Crit Care, Baltimore, MD 21205 USA
[2] AB PRISMA, Lima, Peru
[3] Johns Hopkins Univ, Program Global Dis Epidemiol & Control, Dept Int Hlth, Baltimore, MD 21205 USA
[4] Univ Peruana Cayetano Heredia, Dept Microbiol, Fac Ciencias & Filosofia, Lima, Peru
[5] Univ Peruana Cayetano Heredia, CRONICAS Ctr Excellence Chron Dis, Lima, Peru
[6] Johns Hopkins Sch Med, Div Allergy & Clin Immunol, Baltimore, MD USA
[7] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Environm Hlth Sci, Baltimore, MD USA
[8] Inst Nacl Salud Publ, Ctr Informac Decis Salud Publ, Cuernavaca, Morelos, Mexico