In addition, Johannes Schaeuble engaged in "bastard studies" in Chile. In the early part of the Shōwa era, Japanese governments executed a eugenics policy to limit the birth of children with "inferior" traits, as well as aiming to protect the life and health of mothers. The "Race Eugenic Protection Law" was submitted from 1934 to 1938 to the Diet. After four amendments, this draft was promulgated as the "National Eugenic Law" in 1940 by the Konoe government. According to the "Eugenic Protection Law" (1948), sterilization could be enforced on criminals "with genetic predisposition to commit crime", patients with genetic diseases such as total color-blindness, hemophilia, albinism and ichthyosis, and mental affections such as schizophrenia, and manic-depressiveness, and those with epilepsy. Mental illnesses were added in 1952. The "Leprosy Prevention laws" of 1907, 1931 and 1953, the last one only repealed in 1996, permitted the segregation of patients in sanitariums where forced abortions and sterilization were common, even if the laws did not refer to it, and authorized punishment of patients "disturbing peace", as most Japanese leprologists believed that vulnerability to the disease was inheritable. There were a few Japanese leprologists such as Noburo Ogasawara who argued against the "isolation-sterilization policy" but he was denounced as a traitor to the nation at the 15th conference of the Japanese Association of Leprology in 1941. One of the last eugenic measures of the Shōwa regime was taken by the Higashikuni government. On 19 August 1945, the Home Ministry ordered local government offices to establish a prostitution service for allied soldiers to preserve the "purity" of the "Japanese race". The official declaration stated: "Through the sacrifice of thousands of "Okichis" of the Shōwa era, we shall construct a dike to hold back the mad frenzy of the occupation troops and cultivate and preserve the purity of our race long into the future..." Early in the Japanese administration of Korea, staff at the Japanese Association of Leprology attempted to discourage marriage between Japanese women and Korean men who had been recruited from the peninsula as laborers following its annexation by Japan in 1910. In 1942, a survey report argued that "the Korean laborers brought to Japan... are of the lower classes and therefore of inferior constitution...By fathering children with Japanese women, these men could lower the caliber of the Yamato minzoku".