More Groups
Fewer Groups
More People
Fewer People
Boyce, G. A.; Sivak, M. V. Jr; Rosch, T. H.; Classen, M.; Fleischer, D.; Boyce, H. W.; Lightdale, C. J.; Botet, J. F.; Hawes, R. H.; Lehman, G. A. Gastrointestinal Endoscopy (1990)
Lightdale, C.; Botet, J.; Zauber, A.; Brennan, M. Gastrointestinal Endoscopy (1990)
Lightdale, C.; Botet, J.; Woodruff, J.; Brennan, M. Gastrointestinal Endoscopy (1990)
Myskowski, P. L.; Straus, D. J.; Safai, B. Journal of the American Academy of Dermatology (1990)
Lightdale, C. J.; Botet, J. F. Gastrointestinal Endoscopy (1990)
Levine, J. G.; Botet, J.; Kurtz, R. C. Gastrointestinal Endoscopy (1990)
Shike, M.; Wallach, C.; Bloch, A.; Brennan, M. F. Gastrointestinal Endoscopy (1990)
Shah, J. P.; Ihde, J. K. Current Problems in Surgery (1990)