How often do we reflect on the joy of breathing easily of swallowing without effort and discomfort, of walking without pain, of a complete and peaceful night's sleep?
平日呼吸轻松，吞食自如，走路毫不费劲，一夜安寝到天明，我们几曾回味过其中的乐趣？
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Objective:To study the therapeutic efficacy and safety of the Fentanyl transdermal patch on the aged patients with moderate or severe cancer pain and swallowing difficulty.