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Allergan公司开发的Botox(肉毒杆菌毒素A)获FDA批准用于预防慢性偏头痛患者(或每月头痛发作15次以上,每次持续时间在4小时至1天或更
Botox (botulinum toxin A) developed by Allergan is approved by the FDA for the prevention of chronic migraine (or more than 15 episodes per month for headaches lasting 4 hours to 1 day or more