%0 Journal Article %T Self-Reported Zygosity and the Equal-Environments Assumption for Psychiatric Disorders in the Vietnam Era Twin Registry %A Xian, Hong %A Scherrer, Jeffrey %A Eisen, Seth %A True, William %A Heath, Andrew %A Goldberg, Jack %A Lyons, Michael %A Tsuang, Ming %J Behavior Genetics %V 30 %N 4 %P 303-310 %@ 0001-8244 %D 2004-10-15 %I Kluwer Academic Publishers-Plenum Publishers %~ DeepDyve