3Rodriguez-Auad JP, Nava-Frlas M, Casasola-Flores J, et al. Theepidemiology and clinical characteristics of respiratory syncytialvirus infection in children at a public pediatric referral hospitalin Mexico. International Journal of Infectious Diseases, 2012,16(7):e508-e513.
4Shah UH, Abu-Shabeen AK, Malik MA,et al. The efficacy of zincsupplementation in young children with acute lower respiratoryinfections: A randomized double-blind controlled trial. ClinicalNutrition, 2013,32(3):193-199.