Ecker, Lucie, et al. “Prevalence of Purchase of Antibiotics Without Prescription and Antibiotic Recommendation Practices for Children under Five Years of Age in Private Pharmacies in Peri-Urban Areas of Lima, Peru”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 33, no. 2, May 2016, pp. 215-23, https://doi.org/10.17843/rpmesp.2016.332.2152.