title: In memoriam: Petrus Johannes Waardenburg, 1886--1979.
mesh_terms: D000015:Abnormalities, Multiple / Q000266:history*; D005826:Genetics, Medical / Q000266:history; D049673:History, 20th Century; D006801:Humans; D008297:Male; D009426:Netherlands; D009885:Ophthalmology / Q000266:history; D014849:Waardenburg Syndrome / Q000266:history*