Igwilo, I. A., Oremosu, A. A., Kanu, O. O. and Dosumu, O. (2013) “Subnasio-Sella Distance for Transnasal Approach to the Sella Region: Indirect vs. Direct Measurement on Sagittal Section of the Skull in Nigerians”, Asian Journal of Medical Sciences, 5(2), pp. 120–129. doi: 10.3126/ajms.v5i2.8453.