John A. Ryan
About
John A. Ryan has authored 66 papers that have received a total of 4.3k indexed citations.
This includes 42 papers in Surgery, 26 papers in Oncology and 20 papers in Pulmonary and Respiratory Medicine. The topics of these papers are Pancreatic and Hepatic Oncology Research (20 papers), Pancreatitis Pathology and Treatment (12 papers) and Gallbladder and Bile Duct Disorders (9 papers). John A. Ryan is often cited by papers focused on Pancreatic and Hepatic Oncology Research (20 papers), Pancreatitis Pathology and Treatment (12 papers) and Gallbladder and Bile Duct Disorders (9 papers) and collaborates with scholars based in United States and United Kingdom. John A. Ryan's co-authors include Richard A. Kozarek, Patrick C. Freeny, L. William Traverso, Josef E. Fischer and David J. Patterson and has published in prestigious journals such as New England Journal of Medicine, Journal of Clinical Oncology and Gastroenterology
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