About Cecil Collins-Williams Cecil Collins-Williams (1918-2011), BA, MD, FRCP (C) was head of the Allergy Division and Senior Staff Physician at The Hospital for Sick Children, Toronto, and a professor emeritus of Paediatrics at the University of Toronto. Books by Cecil Collins-Williams Paediatric Allergy and Clinical Immunology (As Applied to Atopic Disease) A Manual for Students and Practitioners of Medicine (Fourth Edition) by (author) Cecil Collins-Williams