Lu F.-J.Lin W.-W.TIEN-SHANG HUANG2020-06-032020-06-0319940269-4042https://www.scopus.com/inward/record.uri?eid=2-s2.0-0028035975&doi=10.1007%2fBF00209826&partnerID=40&md5=25f33704fe61597ad022d37cb5b7eb21https://scholars.lib.ntu.edu.tw/handle/123456789/496868Humic substances shorten human plasma prothrombin timejournal article10.1007/BF002098262-s2.0-0028035975