1. Dermal melanocytosis associated with cleft lip;Inoue;Archives of Dermatology,1982
2. The neural crest in abnormalities of the face and brain;Johnston,1975
3. Circumscribed dermal melanocytosis (Mongolian spot);Kikuchi,1981
4. Cleft lip nevus;Mori;Japanese Journal of Plastic and Reconstructive Surgery,1975
5. On the Mongolian spot in the Japanese;Morooka;Kaibogaku Zasshi,1931