EUHASS: The European Haemophilia Safety Surveillance system.

Pharmacovigilance is an essential element of any drug treatment and considering the history of adverse events due to products used to treat inherited bleeding disorders, it should be an integral component of modern haemophilia treatment. Because inherited bleeding disorders and adverse events are rare, a multicentre, preferably multinational, adverse event reporting scheme for all clotting factor products is required. EUHASS is a European, prospective, multicentre adverse event reporting scheme in the field of inherited bleeding disorders.
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