Anorectal Manometry Analysis of Patients with Functional Constipation by Sex，Age and Accompanying Symptoms　
YAN Xiaoni，YIN Yan，REN Xiaoyang，LYU Jun，YAO Wanxia
Chinese General Practice . 2019, (24): 2913 -2917 .  DOI: 10.12114/j.issn.1007-9572.2018.00.417

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