Serum Cystatin C as a Potential Marker for Glomerular Filtration Rate in Patients with Cholangiocarcinoma - Ciin, Mang Ngaih; Proungvitaya, Tanakorn; Limpaiboon, Temduang; Cha’on, Ubon; Roytrakul, Sittiruk; Proungvitaya, Siriporn (International Journal of Hematology-Oncology and Stem Cell Research, 2020)