Both the World Health Organization and Miriam Labbok have devised very specific research definitions for different amounts of breastfeeding. The WHO ones should be available from their web site. Labbok and Krasovec is the references for Labbok's definitions. I believe the guidelines for publication in Journal of Human Lactation include the requirement that the research be done using one or the other of these sets of definitions. Kathy Dettwyler _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html