女孩,3岁。1周前出现阴道流血,持续5天,每天量不多。双侧乳腺B2期,乳晕色黑。骨龄相当于3岁。母亲发现其所服长效避孕药少了3颗。该患儿可能为()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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