Update on endoscopic tissue sampling devices.

  title={Update on endoscopic tissue sampling devices.},
  author={Alan N Barkun and Julia J. Liu and Steven R Carpenter and Poonputt Chotiprasidhi and Ram Chuttani and Gregory G. Ginsberg and Nadeem Hussain and William Silverman and Greta Taitelbaum and Bret T. Petersen},
  journal={Gastrointestinal endoscopy},
  volume={63 6},