Referência:

Adaptado de Caring for your baby and young child? Birth to age 5, Fifth Edition, edited by Steven Sheloy and Tanya Remer Altmann. 1991; 1993; 1998; 2004; 2009. By the American Academy of Pediatrics and Bright Futures: Guidelines for Health Supervision of Infants, Children, and Adolescents, Third Edition, edited by Joseph Hagan, Jr, Judith s. Shaw, and Paula M. Ducan, 2008, Elk Grove Village, IL American Academy of Pediatrics.