Demilow, T. L., Ngowi, B. N., Mbwambo, J. S., Bright, F., Kiwango, F., Mteta, A. K. and Mbwambo, O. J. (2021) “Pen cap in the urinary bladder: A rare type foreign body in the urinary bladder in a 16 years old female”, GSC Advanced Research and Reviews, 6(3), pp. 175–180. doi: 10.30574/gscarr.2021.6.3.0057.