Essentials of GastroenterologyLawrence S. Friedman, Shanthi Srinivasan · First published 2011Open the Tome
Sleisenger & Fordtran's gastrointestinal and liver diseaseMark Feldman, Lawrence S. Friedman, Marvin H. Sleisenger, Bruce F. Scharschmidt, Lawrence J. Brandt · First published 1996Open the Tome