A.年青體壯者便秘時 B.月經(jīng)期婦女 C.嚴(yán)重氣質(zhì)性病變引起的排便困難 D.嚴(yán)重的腸道憩窒
A.71% B.61% C.51% D.41%
A.2~3 B.3~6 C.6~8 D.8~10