chingho chang to give larry sandler memorial lecture at dros21 dont miss the eagerlyanticipated larry sandler memorial lecture in the opening session of the 62nd annual drosophila research conference the larry sandler memorial lecture is presented by an outstanding recent phd graduate on the player checkin upon arrival at the national tournament all players are required to sign to register their attendance you will need to have with you valid photo id if this is your first nationals and you are a national of the usa or canada you will need to bring your passport to have your your loved ones and addiction characteristics of addiction drug addiction is marked by being unable to stop abusing drugs or alcohol someone addicted to drugs or alcohol will continue using despite the harm it causes themselves and their loved ones different drugs have different effects on a