The article I was thinking of was in a Pew Report. Thanks to everyone who pointed the way to this and a couple of other sources! Carole Carole Gilbert Helen L. DeRoy Medical Library Providence Hospital 16001 West Nine Mile Road Southfield, MI 48075 248/849-3294 248/849-3201 (fax) [log in to unmask] CONFIDENTIALITY NOTICE: This email message and any accompanying data are confidential, and intended only for the named recipient(s). If you are not the intended recipient(s), you are hereby notified that the dissemination, distribution, and or copying of this message is strictly prohibited. If you receive this message in error, or are not the named recipient(s), please notify the sender at the email address above, delete this email from your computer, and destroy any copies in any form immediately.