Abdurrahman M B, Ochoga S A
Trop Geogr Med. 1978 Sep;30(3):325-9.
Casual blood pressure was measured in 600 healthy school children in Kaduna, Nigeria. Of these children, 21 (3.5%) had blood pressure more than two standard deviations above the mean for age. There was no significant difference in the pattern of mean blood pressure in both sexes.