"Between 1932 and 1961 Serrano Vicéns systematically studied the sexuality of 1417 women who went through his surgery. With that data, he wrote a book entitled "Female sexuality. A statistical investigation " that remained unpublished for years due to the difficulties of publishing a book on that subject in Spain governed by General Franco. With the approval of the author, the book circulated  privately in different universities inside and outside the country.  Serrano Vicéns's data was highly praised by a better-known researcher of contemporary human sexual behavior: Alfred C. Kinsey" (Wikipedia article on Ramon Serrano Vicéns, accessed 6-2019).