[1] Hosp Infantil Mexico Fed Gomez, Dept Ediciones Med, Mexico City, DF, Mexico
[2] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Dept Nefrol & Metab Mineral, Mexico City, DF, Mexico
[3] Hosp Infantil Mexico Fed Gomez, Direcc Invest, Mexico City, DF, Mexico