Guillermo Ramírez

Post–COVID-19 Cholangiopathy: A Novel Entity

Nitzan Roth, Angela Kim, Taisia Vitkovski et al. · The American Journal of Gastroenterology · 2021 · 198 citations · Full text

A phase III study comparing the clinical utility of four regimens of 5-Fluorouracil.A preliminary report

Fred J. Ansfield, Jerome Klotz, Thomas F. Nealon et al. · Cancer · 1977 · 152 citations · Full text

Oncology, Colon Rectum Group, Health Sciences +15

Adenocarcinomas of stomach, pancreas, liver, and biliary tracts.Survival of 328 patients treated with fluoropyrimidine therapy

Hugh L. Davis, Guillermo Ramírez, Fred J. Ansfield · Cancer · 1974 · 85 citations · Full text

Surgical Oncology, Gastroenterology, Pathology +19

Combined therapy in advanced head and neck cancer: a randomized study.

Frank F. Gollin, Fred J. Ansfield, James H. Brandenburg et al. · PubMed · 1972 · 71 citations

Neck Cancer, Neoadjuvant Therapy, Pathology +20

<i>In Vitro</i>Screening of Medicinal Plants Used in Mexico as Antidiabetics with Glucosidase and Lipase Inhibitory Activities

Guillermo Ramírez, Miguel Ángel Zavala-Sánchez, J. Cabrera Perez et al. · Evidence-based Complementary and Alternative Medicine · 2012 · 63 citations · Full text

Lipase Inhibitory Activities, Biochemistry, Medicine +11