Hi Larissa, Thanks for you interest in ATHG! I'm sending you a letter via email that describes the group more fully and tells how to join. Yours, Ron Roizen Sec-Treas, ATHG -- Ron Roizen, Ph.D. voice: 510-848-9123 fax: 510-848-9210 home: 510-848-9098 1818 Hearst Ave. Berkeley, CA 94703 U.S.A. [log in to unmask] [log in to unmask]