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Normal Development: 4 Years Old: References

Important Milestones: Your Child at Four Years. Centers for Disease Control and Prevention. Page last reviewed on 3/27/2014.

Bright Futures Pocket Guide, 3rd Edition. 2010. Edited by Joseph F. Hagan Jr. MD, FAAP; Judith S. Shaw, RN, MPH, EdD; and Paula Duncan, MD, FAAP. American Academy of Pediatrics. Accessed from

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