Research on the relationship between premature ejaculation and Meissner's corpuscles in pre-puces pre and post-surgery A Recommendable Standard Protocol of Adult Male Circumcision with the Chinese Shang Ring: Outcomes of 328 Cases in China 包皮环切术前后包皮中触觉小体与早泄的相关性应用中国商环包皮环切手术标准化方案对328例成年男性包皮环切的临床报告