Tsoi, Kok & Long, 1977
Woodbridge Hospital, Singapore

This publication reports about 116 persons (98 males, 17 females and one hermaphrodite) who went to the Gynecological Clinic of the University Hospital in Singapore with the desire to receive sex reassignment surgery. They were transferred for psychiatric and psychological diagnosis to the above-mentioned institution. Of the 98 males, 56 were diagnosed as MFTs; of those 32 were operated during the reporting time period who had to fulfil the following four criteria:complete transsexual symptom; never had desire for heterosexual contacts and no corresponding experiences; lived at least three years as a female; finally, mental stability, at least average intelligence and no psychiatric illnesses.
The publication contains interesting data about the prevalence of transsexual symptoms in Singapore (higher than in European studies); about the manifestation age (lower than in European and North American studies); about test psychological variables and about employment (a lot higher portion of prostitutes than in the European and North American studies, 59% were full-time and 23% were part-time prostitutes).
Under follow-up study aspects, this publication is unfruitful. Regarding such aspects, it is based only on the verbal information of the surgeon, according to whom all operated could make a legal sex change, there were "no psychiatric complication(s)" and "none of them regretted the operation" (p. 408).