Grand Rapids Mamas--Looking for doctor who is not against co-sleeping...

I'm a writer working on a story for a local parenting magazine, and I want to make sure I present a balanced view of co-sleeping in it, but so far all the docs I've been able to find so far are against co-sleeping. If anybody knows of a doctor--a pediatrician would be especially great--who doesn't believe that co-sleeping is dangerous or who could talk about "safe cosleeping", I would so appreciate hearing about him or her! e-mail me at meaganfrancis at yahoo dot com. Thanks!