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Preanesthetic Medication with Intramuscular Administration of Hydroxyzine Hydrochloride: Parallel Double-Blind Study of Hydroxyzine Hydrochloride, Meperidine Hydrochloride, Hydroxyzine Hydrochloride and Meperidine Hydrochloride Secobarbital Sodium, and a Placebo. JAMA. 1963;184(10):199. doi:10.1001/jama.1963.03700230155071
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