Sah, B. P., Chettri, S. T., Prasad, J. N., Gupta, P. P., shah, S. P., Paudel, D., & Jaiswal, R. K. (2015). Foreign body stone in oesophagus: a unique case. Health Renaissance, 12(2), 140–142. https://doi.org/10.3126/hren.v12i2.14120