Incidence and Concurrent Laparoscopic Repair of Hypertrophic Pyloric Stenosis and Patent Processus Vaginalis - Xue-Qiang Yan; Nan-Nan Zheng; Fu-Zhong Xing; Lei Yu; Wei Lu; Xu-Fei Duan; Jun Yang; Hong-Qiang Bian (Chinese Medical Journal, 2015)