Eyong, K. I., E. E. Ekanem, and A. A. Asindi. “Birth Asphyxia: A Major Cause of Microcephaly in the Calabar, Nigeria”. International Journal of Contemporary Pediatrics, vol. 2, no. 4, Jan. 2017, pp. 367-70, doi:10.18203/2349-3291.ijcp20150976.