RT Journal A1 Goodman DM, Burke AE, Livingston EH T1 BLeeding disorders JF JAMA JO JAMA YR 2012 FD October 10 VO 308 IS 14 SP 1492 OP 1492 DO 10.1001/jama.2012.4089 UL http://dx.doi.org/10.1001/jama.2012.4089 AB When tissues are injured, blood cell fragments called platelets gather at the wound, providing a foundation for coagulation (clotting). Platelets are bound together by a glue-like protein named von Willebrand factor. Once the initial platelet plug is built, clotting factors gather at the injury site to seal the wound, stop bleeding, and begin the healing process. The clotting factors work in a carefully timed sequence, resulting in a sturdy clot and healed wound.