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Oral fluid as a medium for the detection of hepatitis B surface antigen., Hutse, Veronik, Verhaegen Els, De Cock Liesbet, Quoilin Sophie, Vandenberghe Hans, Horsmans Yves, Michielsen Peter, Van Damme Pierre, Van Vlierberghe Hans, Claeys Fran\'e7oise, et al. , J Med Virol, 2005 Sep, Volume 77, Issue 1, p.53-6, (2005)\par \par }