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John Travis, "Comfortably Numb, Anesthetics are slowly giving up the secrets of how they work," Science News. (July 3rd 2004). [1]. نسخة محفوظة 15 أبريل 2008 على موقع واي باك مشين.
John Travis, "Comfortably Numb, Anesthetics are slowly giving up the secrets of how they work," Science News. (July 3rd 2004). [1]. نسخة محفوظة 15 أبريل 2008 على موقع واي باك مشين.