Schmeidler J, Lazzeroni LC, Swerdlow NR, Ferreira RP, Braff DL, Calkins ME, Cadenhead KS, Freedman R, Green MF, Greenwood TA, Gur RE, Gur RC, Light GA, Olincy A, Nuechterlein KH, Radant AD, Seidman LJ, Siever LJ, Stone WS, Sprock J, Sugar CA, Tsuang DW, Tsuang MT, Turetsky BI, Silverman JM. Paternal age of schizophrenia probands and endophenotypic differences from unaffected siblings. Psychiatry Res. 2014 Sep 30; 219(1):67-71.