2003 Oct 30 [updated 2021 Mar 4]. In: Adam MP, Feldman J, Mirzaa GM, Pagon RA, Wallace SE, Amemiya A, editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993–2025.
PMID:20301581
Congenital midline sinus of the upper lip.
Fok D, Kua EH, Por YC.
Singapore Med J. 2015 Jun;56(6):e107-9. doi: 10.11622/smedj.2015096.
PMID:26106248
Congenital midline sinus of the upper lip: A case report and review of literature.
Salah BI, Al-Rawashdeh B, Al-Ali ZR, Mahseeri M, Al-Zu'bi Z.
Int J Surg Case Rep. 2018;51:41-44. doi: 10.1016/j.ijscr.2018.08.012. Epub 2018 Aug 13.
PMID:30138869
Congenital bilateral lower lip pits associated with fistulae of the minor salivary glands: case report of the principal Van der Woude syndrome's trait.