title: The need for standardization of low molecular weight heparin (LMWH)
mesh_terms: D001780:Blood Coagulation Tests; D005170:Factor X / Q000037:antagonists & inhibitors; D015951:Factor Xa; D006493:Heparin / Q000592:standards*; D006801:Humans
chemical_list: D005170:Factor X; D006493:Heparin; D015951:Factor Xa