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Anesthetic - Wikipedia
Anesthesia - Wikipedia
General anesthesia - Mayo Clinic
Anesthesia: What It Is, Side Effects, Risks & Types - Cleveland Clinic
Anesthetic | Definition, Types, & History | Britannica
What is anesthesia? Local, regional, general, and more - Medical News Today
Anesthesia - National Institute of General Medical Sciences
What is anaesthesia? | Association of Anaesthetists
Anesthesia | Johns Hopkins Medicine
Anesthesia: MedlinePlus