Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Flow chart of sample selection. C, child; HA, haemophilia A; HB, haemophilia B; B+, treatment for an inhibitor with bypassing agents; B−, no treatment for an inhibitor with bypassing agents; A, adult; H, haemophilia; V+, with blood-borne viral infection; V−, without blood-borne viral infection. *Five adults with both viral infection and inhibitors were included in the AHB+ group.
