A comprehensive one-volume reference work on sexual behaviour throughout the world at the beginning of a new millennium. Written by more than 200 leading sexologists in their respective countries and cultures, each lengthy entry explores such areas as heterosexual relationships, children, adolescents, adults, gender-conflicted persons, unconventional sexual patterns, contraception, sexually transmitted diseases, AIDS, sexual dysfunctions, and therapies. It also includes sexual issues for older persons and physically and mentally challenged individuals. Places to be included in this volume for the first time are: Cuba, Denmark, Estonia, France, Hong Kong, Nepal, Norway, Sri Lanka, Switzerland, and Tanzania.