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Intravenous patient-controlled analgesia hydromorphone combined with pregabalin for the treatment of postherpetic neuralgia: a multicenter, randomized controlled study
Ying Huang, Chenjie Xu, Tao Zeng, Zhongming Li, Yanzhi Xia, Gaojian Tao, Tong Zhu, Lijuan Lu, Jing Li, Taiyuan Huang, Hongbo Huai, Benxiang Ning, Chao Ma, Xinxing Wang, Yuhua Chang, Peng Mao, Jian Lin
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