Not to cause a problem here but most of us who had children over 30 years ago mananged to raise them perfectly well. Our daughters are now beseiged with horrors and concerns we never thought about and frankly I think most of it is ridiculous. Makes for very nervous mothers. We all were given common sense so my opinion is to use your own. Every couple of years the medical profession changes everything anyway...so unless something is proven absolutely life threatening I would suggest using your common sense. Good grief we wrapped our babies up in flannel receiving blankets in bed oftentimes with a quilt or afgan on top for warmth. I don't understand how we did it and the mothers before us did it with no problems and now everyone has problems with it.