Charles, N.R., Christian, L.B., Mahapatra, S., Sen, T. and Joshi, B.R. 2003. A Retrospective Study of 461 Patients Treated for Cholelithiasis. Journal of Nepal Medical Association. 38, 132 (Jan. 2003), 114–117. DOI:https://doi.org/10.31729/jnma.1223.