1. The child with multiple birth defects;Cohen,1982
2. Royal College Lecture, Part 1. Children, birth defects, and multiple birth defects;Cohen;Annals of the Royal College of Physicians and Surgeons of Canada,1986
3. Royal College Lecture, Part 2. Children, birth defects, and multiple birth defects;Cohen;Annals of the Royal College of Physicians and Surgeons of Canada,1986
4. Dysmorphology, Syndromology, and genetics;Cohen,1990
5. Craniofacial anomalies and syndromes;Cohen,1990