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Kampman, Carolina J. G., Jeannine L. A. Hautvast, Femke D. H. Koedijk, Marieke E. M. Bijen, and Christian J. P. A. Hoebe. "Sexual Behaviour and STI Testing Among Dutch Swingers: A Cross-sectional Internet Based Survey Performed in 2011 and 2018." PLoS One 2020.

Kampman, Carolina J. G., et al. "Sexual Behaviour and STI Testing Among Dutch Swingers: A Cross-sectional Internet Based Survey Performed in 2011 and 2018." PLoS One 2020.