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web.archive.org
McKusick, Victor A. (10 February 2009). "Widow's Peak". Online Mendelian Inheritance in Man. Johns Hopkins University. 194000. Archived from the original on 9 December 2015.
McKusick, Victor A. (25 June 1994). "Dimples, Facial". Online Mendelian Inheritance in Man. Johns Hopkins University. 126100. Archived from the original on 9 April 2019.
McKusick, Victor A. (23 March 2013). "Cleft Chin". Online Mendelian Inheritance in Man. Johns Hopkins University. 119000. Archived from the original on 29 April 2017.
McKusick, Victor A.; O'Neill, Marla J. F. (22 November 2010). "Apocrine Gland Secretion, Variation in". Online Mendelian Inheritance in Man. Johns Hopkins University. 117800. Archived from the original on 30 April 2017.
Tüzün, Yalçın; Karaku, Özge (2009). "Leukonychia"(PDF). Journal of the Turkish Academy of Dermatology. JTAD. Archived from the original(PDF) on 2016-03-03. Retrieved 2012-03-03.