http://www.babywisebooks.com/babywise-method/ is the best article I have ever seen on this topic. It lists the five leading experts/authors in the world on it and shows who the original is on the subject and then who came after and how all of them have definite similarities we can draw on. (all 5 are also medical professionals).
For any mother that cares to research for herself, this site will also show you dozens of doctors and pediatricians support and comments for the Babywise methods that over 6 million parents love with their children over the last 24 years.
If you are interested in what the American Academy of Pediatrics thinks on this subject (they have over 50,000 more Pediatricians):
The AAP states that newborns "be nursed whenever they show signs of hunger..... approximately 8 to 12 times every 24 hours."
If you look at page 70 of On Becoming Babywise Pediatrician Robert Bucknam, M.D and co-author Gary Ezzo state, "with these recommended times you will average between 8 - 10 feedings a day."
Looks pretty safe to me as the AAP recommends the same exact amount of feedings for your baby and Pediatrician Bucknam/Ezzo recommend the same authority: the mom should make the call as to exactly when her baby is hungry.
When it comes to the concept of babies crying, the American Academy of Pediatrics (quoted in On Becoming Babywise on page 146 says, "Many babies cannot fall asleep more without crying and will go to sleep more quickly if left to cry for a while. The crying should not last long if the child is truly tired." The AAP goes on to say, "Sometimes you think your baby is waking up when she's actually going through a phase of very light slumber. She could be squirming, startling, fussing, or even crying-- and still be asleep. Or she may be awake but not on the verge of drifting off again if left alone. Do not make the mistake of trying to comfort her during these moments; you'll only awaken her further and delay her going back to sleep. Instead, if you let her fuss and even cry for a few minutes, she'll learn to get herself to sleep without relying on you." The AAP goes on to say, "same babies actually need to let off energy by crying in order to settle into sleep or rouse themselves out of it. As much as fifteen minutes of fussing will not do your child any harm. Just be sure she's not crying out of hunger or pain, or because her diaper is wet."
This is precisely the entire point of Babywise and from what I read, the whoe them of the book. I cannot fathom where all the rumors of "no medical backing" and "dangerous" come from as Pediatricians all over the country back what 23 year Pediatrician and author Robert Bucknam, M.D. and his co-author Gary Ezzo have written.
Moms-- enjoy this book, use your common sense..... and happy sleeping!!