宫外孕亦称异位妊娠,是指孕卵不在子宫内而是在子宫以外的部位如输卵管、卵巢以及腹腔等部位,种植发育,其中98%的宫外孕发生在()。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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