Paper cuts? Duplication, data manipulation force retraction of study of circumcision by ring device

A group of Chinese authors studying the Shang Ring, “a device that allows professionals to perform hundreds rather than tens of” circumcisions in a day, as had to retract the paper after editors apparently figured out they had changed some dates in the paper so it wouldn’t look as though they were trying to publish it twice. Or maybe they just changed the dates for some other reason, while publishing it twice anyway — it’s not clear.

Here’s the Journal of Urology notice for “A Randomized Clinical Study of Circumcision with a Ring Device Versus Conventional Circumcision,” by Cheng Yuea and colleagues from the Medical College of Ningbo University, the Traditional Chinese Medicine Hospital, and Taizhou First People’s Hospital: