el Shibly E T, Omer M I, Downham D Y
Ann Trop Paediatr. 1985 Jun;5(2):67-8. doi: 10.1080/02724936.1985.11748364.
Gestational age was assessed in 200 Sudanese newborns using the method of external superficial characteristics. Breast size, skin texture and ear firmness were found to be the best. Skin colour was not found to be of value.