No abstract available
MeSH terms
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Adolescent
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Adult
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Anesthesia
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Child
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Chorionic Gonadotropin / urine
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Clinical Laboratory Techniques
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False Positive Reactions
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Female
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Humans
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Menstruation / physiology
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Middle Aged
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Pregnancy
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Pregnancy Tests / standards*
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Preoperative Care*
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Preoperative Period
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Young Adult