@book{5502, author = {Kundoor, Vishwa}, title = {When Anti-Neutrophil Cytoplasmic Antibody Fails: A Case of Anti-Neutrophil Cytoplasmic Antibody Negative Granulomatosis With Polyangiitis.}, year = {2020}, url = {https://dx.doi.org/10.7759/cureus.8883} }