TY - BOOK AU - Feldman, Mark AU - Friendman, Lawrence S. AU - Brandt, Lawrence J. TI - Sleisenger and Fordtran's Gastrointestinal and Liver Disease Volume 2 SN - 0323760775 PY - 2021/// CY - Philadelphia, PA PB - Elsevier KW - Medicine KW - Gastroenterology and Hepatology ER -