1. 1) Jennette, J.C., et al.: 2012 revised International Chapel Hill Consensus Conference Nomenclature of Vasculitides. Arthritis Rheum. 65: 1-11, 2013.
2. 2) Sada, K.E., et al.: Different responses to treatment across classified diseases and severities in Japanese patients with microscopic polyangiitis and granulomatosis with polyangiitis: a nationwide prospective inception cohort study. Arthritis Res Ther. 17: 305, 2015.
3. 3) Samim, M., et al.: Intestinal perforation as an early complication in Wegener's granulomatosis. World J Gastrointest Surg. 2: 169-171, 2010.
4. 4) Akbulut, S.: Multiple ileal perforations in a patient with Wegener's granulomatosis: a case report and literature review. J Gastrointest Surg. 16: 857-862, 2012.
5. 5) Storesund, B., et al.: Severe intestinal involvement in Wegener's granulomatosis: report of two cases and review of the literature. Br J Rheumatol. 37: 387-390, 1998.