42.下列何者屬於前瞻性研究(prospective study)?
(A)anecdotal reports
(B)randomized control trial
(C)case control studies
(D)case report
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統計: A(122), B(1827), C(181), D(39), E(0) #408251
統計: A(122), B(1827), C(181), D(39), E(0) #408251