TY - RPRT TI - Preanalytical variables in coagulation testing. AU - Chelsea A Sheppard AU - Cindy Channell AU - James C Ritchie AU - Alexander Duncan PY - 2006 DO - 10.1097/01.mbc.0000233376.64346.23 UR - https://pubmed.ncbi.nlm.nih.gov/16788322/ ID - 16788322 ER -