Harris Interactive has utilized multiple sources to invite Severe Hemophilia A patients or their caregivers for participation in this research survey.
For that reason, you may be receiving multiple invitations (e-mail, mail, in-person) to participate. If this is the case, we apologize for any inconvenience.
Because we will only be able to make a one-time single payment to individuals, we ask that you please only fill out this survey once.

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