[1] Univ Autonoma Nuevo Leon, Fac Med, Dept Prevent Med & Publ Hlth, 235 Dr Jose Eleuterio Gonzalez, Monterrey 64460, Mexico
[2] Univ Autonoma Nuevo Leon, Univ Hosp Dr Jose Eleuterio Gonzalez, Rheumatol Serv, Monterrey, Nuevo Leon, Mexico
[3] Tecnol Monterrey, Inst Ophthalmol & Visual Sci, Sch Med & Hlth Sci, Monterrey, Mexico