血清β-HCG、E2、P以及E2/P在异位妊娠与早期先兆流产中的研究现状
혈청β-HCG、E2、P이급E2/P재이위임신여조기선조유산중적연구현상
Study of serum β-HCG,E2,P and E2/P in ectopic pregnancy and earlier threatened abortion
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