Ecker, Lucie, Theresa J. Ochoa, Martha Vargas, Luis J. Del Valle, and Joaquim Ruiz. 2014. “Preferences of Antibiotic Use in Children Less Than Five in Physicians Working Health Centers of Primary Level in Peru-Urban Areas of Lima, Peru”. Revista Peruana De Medicina Experimental Y Salud Pública 30 (2). https://doi.org/10.17843/rpmesp.2013.302.189.