TY  - RPRT
TI  - A potential pitfall in studying trait-discordant twins.
AU  - G D Friedman
PY  - 1977
DO  - 10.1093/oxfordjournals.aje.a112385
UR  - https://pubmed.ncbi.nlm.nih.gov/848478/
ID  - 848478
ER  -