A.普查 B.抽樣調(diào)查 C.隊(duì)列研究 D.發(fā)病率調(diào)查 E.篩檢
A.發(fā)病率6.8% B.罹患率6.8% C.發(fā)病專率6.8% D.患病專率6.8% E.患病率6.8%