Hector Garcia, Universidad Autonoma De Chihuahua
H. García, Autonomous University of Chihuahua, Faculty of Nursing and Nutriology
N. A. González, Autonomous University of Chihuahua
M. A. Quintanar, Juárez University of Durango State
S. Ojeda, Autonomous University of Chihuahua, Faculty of Nursing and Nutriology
M. Intriago, Juarez University of Durango, Medicine Faculty
M. Carrera, Juarez University of Durango, Medicine Faculty