Helping relationships and genetic propensities: a combinatoric study of DRD2, mentoring, and educational continuation.
Shanahan MJ, Erickson LD, Vaisey S, Smolen A. Helping relationships and genetic propensities: a combinatoric study of DRD2, mentoring, and educational continuation. Twin Res Hum Genet. 2007 Apr; 10(2):285-98.