Jannini Emmanuele A, Gravina Giovanni Luca, Buisson Odile, Foldès Pierre, Burri Andrea Virginia, Cherkas Lynn, Spector Timothy D
School of Sexology, University of L'Aquila, Rome, Italy; Centre d'échographie, Saint Germain en Laye, France; Hôpital de Saint Germain en Laye, Saint Germain en Laye, France; Department of Twin Research and Genetic Epidemiology, King's College London, London, UK.
J Sex Med. 2010 Jun;7(6):2289-2294. doi: 10.1111/j.1743-6109.2010.01807.x.