TY - SER TI - Gastrointestinal endoscopy clinics of North America SN - 1052-5157 PY - 1991///- CY - Philadelphia PB - W.B. Saunders Co. KW - Endoscopy KW - Periodicals KW - Gastrointestinal diseases KW - Diagnosis KW - Endoscopy, Gastrointestinal N1 - Each issue has also a distinctive title; Published: Elsevier Health Sciences Division, <2005-> UR - https://go.openathens.net/redirector/tu.ac.th?url=https%3A%2F%2Fsearch.ebscohost.com%2Flogin.aspx%3Fdirect%3Dtrue%26db%3Dedspub%26AN%3Dedp186079%26site%3Deds-live%26scope%3Dsite%26custid%3Ds4775581 ER -