Susan Markel, M.D. is a board-certified pediatrician who has a private consultative practice special¬izing in parent coaching and child health. A graduate of Tufts University School of Medicine in Boston, Dr. Markel became a fellow of the American Academy of Pediatrics in1981, and an International Board Certified Lactation Consultant (IBCLC) in 1997. During her years in private pediatrics practice in central Connecticut, she served as an assistant clinical professor of pediatrics at the University of Connecticut Health Center, teaching pediatric residents. For many years, she served as a medical liaison for the breastfeeding support organization La Leche League International. She is also a medical associate at Attachment Parenting International, a nonprofit parenting organization promoting ""peaceful parenting for a peaceful world."" Dr. Markel has been a regular contributor to BabyCenter.com and is a spokesperson for ERGObaby carriers, which features her on its Web site.

Dr. Markel divides her time between homes in Connecticut and Aix en Provence, France. She can be reached via her website, AttachmentParentingDoctor.com

Dr. Linda Palmer is a doctor of chiropractic, a consultant and speaker on pediatric nutrition and natural parenting challenges, a science writer and a mother. She left her chiropractic practice shortly after the birth of her son, when she was confronted with his serious health complications and astounded by the lack of accurate or helpful information from doctors or books. For her son's sake, she delved deeply into the scientific and medical literature to find answers, which led to further questions and some astonishing realizations.