Dr. William Sears, affectionately known as "America's Pediatrician" (or Dr. Bill to his "little patients"), is the author of more than 30 books, often as a co-author with his wife, Martha Sears, R.N. One of his books — The Baby Book: Everything You Need to Know About Your Baby from Birth to Age 2 — has become the favorite among editors of leading parenting magazines.In addition to his role as a renowned medical and parenting consultant, Dr. Sears is an Associate Clinical Professor of Pediatrics at the University of California and a father of eight children.