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A study on the penile size was made on 702 Korean male of In-patients and Out-patients to the department of Urology, Capital Military Hospital, during the period from May 1, to July 31, 1971. The patient`s ages were ranged from 21 to 31. The length of the penis was measured from the symphysis pubis to the apex of the penis with a tape measure and following results were obtained. 1. The mean length of the penis in a non-erected state was 8.0cm., and in a erected state was 12.7 cm. The average ratios erected length/non-erected length of the penis were 1.9 in a small sized group and 1.4 in a large sized group. 2. The mean circumference of the penis in a non-erected state was 8. 1 cm., and in a erected state was 11.0 cm. The average ratios erected circumference/non-erected circumference of the penis were 1.5 in a small sized group and 1.2 in a large sized group. 3. A slight correlation can be seen between the mean length and circumference of the penis. In a non-erected state, the mean of length and circumference of the penis were equaled and in an erected state, the mean of length of the penis was slightly large than the mean of circumference of the penis.
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