Matovelle, G. and Hernán, D. (2007) Comparison of the molecular methods, terminal restriction fragment length polymorphism and denaturant gradient gel electrophoresis, to characterize the microbiota in feces from breastfed infants. Tesis (Magíster en Microbiología), Universidad San Francisco de Quito, Colegio de Postgrados; Quito, Ecuador, Mayo.