Arlene Eisenberg worked on all three editions of What to Expect When You're Expecting and remained active in the What To Expect Foundation until her death in February 2001. She was also co-author, with Heidi Murkoff, of the "What to Expect" magazine columns.
Heidi Murkoff is the author of the What to Expect® series and author of Eating Well When You're Expecting, The What to Expect Pregnancy Journal & Organizer, What to Expect the First Year, The What to Expect Baby-Sitter's Handbook, and the What to Expect Kids series from HarperCollins. Her interactive website is whattoexpect.com, and she lives with her family in Los Angeles, California.
Sandee Hathaway holds a Bachelor of Science in Nursing degree from Boston University. An experienced RN with a specialty in obstetrics and neonatal care, Sandee lives in Waban, Massachussets, with her husband and three children.