Laboratory identification of familial thrombophilia: do the pitfalls exceed the benefits? A reassessment of ABO-blood group, gender, age and other laboratory parameters on the potential influence on a diagnosis of protein C, protein S and antithrombin deficiency and the potential high risk of a false positive diagnosis - Favaloro,E.J.; Soltani,S.; McDonald,J.; Grezchnik,E.; Easton,L. (Lab Hematol, 2005)