Ahasan, H. N., Khan, M. A. I., Mahbub, M. S., Alam, M. B., Miah, M. T., Gupta, R. D., & Arif, K. M. (2010). Melanosis Coli - An Atypical Presentation. Journal of Medicine, 11(2), 183–185. https://doi.org/10.3329/jom.v11i2.5469