Sathian, B., Sreedharan, J., Baboo, S. N., Sharan, K., Abhilash, E. S. and Rajesh, E. (2010) “Relevance of Sample Size Determination in Medical Research”, Nepal Journal of Epidemiology, 1(1), pp. 4–10. doi: 10.3126/nje.v1i1.4100.