“…Its occurrence has been reported in 4-year-olds in the United States of America (Chakravorty and Ewing, 1957) and Scandinavia (Godtfredsen, 1947), in a 10-year old white American girl (Batory, 1954), and in 12-year old Indian children (Das et al, 1954;Sirsat, 1954).…”