Duangkumpha, K.; Yongvanit, P.; Sithithaworn, P.; Techasen, A.; Chamadol, N.; Laopaiboon, V.; Namwat, N.; Khuntikeo, N.; Thinkhamrop, B.; Loilome, W. An Innovative Algorithm for Population-based Risk Stratification using ultrasound for periductal fibrosis-associated with CCA. Arch AHS 2019, 31, 269-278.