Sorry for the previous bad posting. Since the thread on preventive medication seems to reflect geographic and cultural differences, it would help me to know where the contributors are living. The server addresses seldom give this information. Thanks in advance. BB -- Barbara Belyea Dept of English, University of Calgary Calgary (Alberta) Canada T2N 1N4 vox: 403-220-4656/5470 fax: 403-289-1123 web: http://www.ucalgary.ca/~belyea/