Zaruma-Torres, F. L.; Lares-Asseff, I.; Reyes-Espinoza, A.; Loera-Castañeda, V.; Almanza-Reyes, H.; Arias Pelaez, M. C. Impact of Genetic Polymorphism of Metabolic Pathway of Methotrexate and Survival Rate of Mexican Children Will All. Vitae 2016, 22, 177-187.