The third CMR Workshop prov. ided the opportunity for a group of experts from the Industry, academia and the regulatory authorities to meet and discuss ways and means by which risk benefit decisions are made during the various stages of drug development. It became apparent from the discussions that took place in October 1985, at the CIBA Foundation, that decisions are often made with limited data and inadequate methodology. The conclusions drawn from the day's deliberations were as follows: 1. Current methodology for assessing risk and particularly benefits must be improved; 2. Safety must be...