Percutaneous endoscopic necrosectomy using a fully covered self-expandable metal stent in severe necrotizing pancreatitis - Laopeamthong, Issaree; Tonozuka, Ryosuke; Kojima, Hiroyuki; Mukai, Shuntaro; Tsuchiya, Takayoshi; Sofuni, Atsushi; Itoi, Takao (Endoscopy, 2019)