“…At the beginning of the 20th century, however, the sex ratio was estimated to be equal or even reversed [5]. Some earlier data series [1,[6][7][8][9][10][11][12][13] that illustrate the evidence of pioneer scholars are depicted in Table 1. Counterevidence first arose from two epidemiological prevalence studies in the 1920s, one of them by Bing in Switzerland [1,6,14] and the other by Allison in North Wales [13].…”