Understanding spinal anesthesia.
Gouveia
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Imbelloni
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D000775:Anesthesia, Spinal / Q000379:methods*; D006801:Humans; D011187:Posture; D013127:Spinal Nerves / Q000187:drug effects; D013346:Subarachnoid Space / Q000187:drug effects; D013997:Time Factors