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Insights gained from the management of problematical anal fistulae at St. Mark's Hospital, 1984–88

R. Phillips, S. Choen, 1991, The British journal of surgery.

Comparison between anal endosonography and digital examination in the evaluation of anal fistulae

C. Bartram, R J Nicholls, C I Bartram, 1991, The British journal of surgery.