A novel factor V mutation causes a normal activated protein C ratio despite the presence of a heterozygous F5 R506Q (factor V Leiden) mutation. (19th August 2013) - Prüller, Florian; Raggam, Reinhard B.; Mangge, Harald; Truschnig‐Wilders, Martie; Matzhold, Eva‐Maria; Weiss, Eva‐Christine; Hasiba, Barbara; Summers, Kelli L.; Renner, Wilfried; Siegert, Gabriele; Kostka, Heike