Halbmayer WM, Haushofer A, Schoen R, Mannhalter C, Strohmer E, Baumgarten K, Fischer M (1994). "The prevalence of moderate and severe FXII (Hageman factor) deficiency among the normal population: evaluation of the incidence of FXII deficiency among 300 healthy blood donors". Thromb Haemost. 71 (1): 68–72. doi:10.1055/s-0038-1642386. PMID8165648. S2CID39576004.
Halbmayer WM, Haushofer A, Schoen R, Mannhalter C, Strohmer E, Baumgarten K, Fischer M (1994). "The prevalence of moderate and severe FXII (Hageman factor) deficiency among the normal population: evaluation of the incidence of FXII deficiency among 300 healthy blood donors". Thromb Haemost. 71 (1): 68–72. doi:10.1055/s-0038-1642386. PMID8165648. S2CID39576004.
Ratnoff OD, Margolius A (1955). "Hageman trait: an asymptomatic disorder of blood coagulation". Transactions of the Association of American Physicians. 68: 149–54. PMID13299324.
Halbmayer WM, Haushofer A, Schoen R, Mannhalter C, Strohmer E, Baumgarten K, Fischer M (1994). "The prevalence of moderate and severe FXII (Hageman factor) deficiency among the normal population: evaluation of the incidence of FXII deficiency among 300 healthy blood donors". Thromb Haemost. 71 (1): 68–72. doi:10.1055/s-0038-1642386. PMID8165648. S2CID39576004.