https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm Infant - newborn development https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm MedlinePlus: Infant Development National Institutes of Health: Infant - Newborn Development https://medlineplus.gov/ency/article/002004.htm Infant: Newborn Development https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm motor development https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm https://medlineplus.gov/ency/article/002004.htm