Pal, Kalyan, Dipanjan Chakraborty, Sohag Kundu, and Subrata Mukhopadhyay. 2016. “Collaural Fistula: A Case Report”. Bengal Journal of Otolaryngology and Head Neck Surgery 24 (3). Kolkata, India:157-60. https://doi.org/10.47210/bjohns.2016.v24i3.98.