Genetic and environmental contributions to healthcare need and utilization: a twin analysis.

Por True, W R, Romeis, J C, Heath, A C, Flick, L H, Shaw, L, Eisen, S A, Goldberg, J, Lyons, M J
Publicado em 1997

Heritability of self-reported health.

Por Romeis, J C, Scherrer, J F, Xian, H, Eisen, S A, Bucholz, K, Heath, A C, Goldberg, J, Lyons, M J, Henderson, W G, True, W R
Publicado em 2000