Laparoscopy-assisted pylorus preserving pancreatoduodenectomy for periampullary disease: early experience of second mover. (September 2018) - Kwon, H.J.; Kim, S.G.; Han, Y.S.; Ha, H.; Seo, A.; Kang, M.K.; Chun, J.M.; Yoon, G.-S.; Hwang, Y.J.