sentences:  One possible reason may have been a 1949 British Medical Journal article which stated that there was no medical reason for the general circumcision of babies.The overall prevalence of circumcision in South Korea has increased markedly in the second half of the 20th century, rising from near zero around 1950 to about 60% in 2000, with the most significant jumps in the last two decades of that time period.This is probably due to the influence of the United States, which established a trusteeship for the country following World War II.