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de Looze M, Constantine NA, Jerman P, Vermeulen-Smit E, ter Bogt T.de Looze M, et al. Among authors: constantine na.J Sex Res. 2015;52(3):257-68. doi: 10.1080/00224499.2013.858307. Epub 2014 Feb 10.J Sex Res. 2015.PMID: 24512029