_:b56503356 . _:b56503356 _:b56503357 . _:b56503354 _:b56503356 . _:b56503355 "C0019699" . _:b56503357 . _:b56503354 _:b56503355 . _:b56503354 . _:b56503354 . _:b56503354 . _:b56503357 "seropositivity" . _:b56503354 "0.83"^^ . _:b56503355 "T034" .