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Psychological Reports|April 4, 2003
Birth order among homosexual menKenneth J Zucker, Ray Blanchard, Marvin SiegelmanJournal of Sex & Marital Therapy|December 9, 2003
Birth order in transgendered males from Polynesia: a quantitative study of Samoan fa'afāfineKris H Poasa, Ray Blanchard, Kenneth J ZuckerPlos One|March 22, 2014
Birth order and sibling sex ratio of children and adolescents referred to a gender identity serviceDoug P Vanderlaan, Ray Blanchard, Hayley Wood, et al.Developmental Psychobiology|October 28, 2014
Birth weight and two possible types of maternal effects on male sexual orientation: a clinical study of children and adolescents referred to a Gender Identity ServiceDoug P VanderLaan, Ray Blanchard, Hayley Wood, et al.Psychiatry and Clinical Neurosciences|September 19, 2007
Birth order and sibling sex ratio in homosexual transsexual South Korean men: Effects of the male-preference stopping ruleKenneth J Zucker, Ray Blanchard, Tae-Suk Kim, et al.Proceedings. Biological Sciences|March 19, 2020
A method yielding comparable estimates of the fraternal birth order and female fecundity effects in male homosexualityRay Blanchard, Jurian Krupp, Doug P VanderLaan, et al.Archives of Sexual Behavior|August 24, 2016
Gay Male Only-Children: Evidence for Low Birth Weight and High Maternal Miscarriage RatesMalvina N Skorska, Ray Blanchard, Doug P VanderLaan, et al.Journal of Sex & Marital Therapy|July 12, 2016
The Prevalence of Only-Child Status Among Children and Adolescents Referred to a Gender Identity Service Versus a Clinical Comparison GroupS Kathleen Hughes, Doug P VanderLaan, Ray Blanchard, et al.Hormones and Behavior|April 25, 2002
Fraternal birth order and birth weight in probably prehomosexual feminine boysRay Blanchard, Kenneth J Zucker, Ana Cavacas, et al.The Journal of Sexual Medicine|March 10, 2020
Birth Order and Sibling Sex Ratio in Androphilic Males and Gynephilic Females Diagnosed With Gender Dysphoria From IranBehzad S Khorashad, Kenneth J Zucker, Ali Talaei, et al.Pageof 13