[1] Univ Nacl Autonoma Mexico, Dept Publ Hlth, Fac Med, Mexico City, DF, Mexico
[2] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Dept Nephrol, Mexico City, DF, Mexico
[3] Inst Natl Ciencias Med & Nutr Salvador Zubiran, Dept Transplantat, Mexico City, DF, Mexico
[4] Hosp Gen Mexico Doctor Eduardo Liceaga, Dept Transplantat, Mexico City, DF, Mexico
[5] Univ Nacl Autonoma Mexico, Dept Publ Hlth, Fac Med, Mexico City, DF, Mexico
[6] Loyola Univ, Dept Publ Hlth Sci, Chicago, IL 60611 USA
[7] Inst Natl Cardiol Ignacio Chavez, Dept Cardiol, Mexico City, DF, Mexico