Andrews, M., Edmunds, M., Campbell, A., Walls, J., & Feehally, J. (1990). Systemic Vasculitis in the 1980s—Is There an Increasing Incidence of Wegener's Graanulomatosis and Microscopic Polyarteritis? J R Coll Physicians Lond.

Andrews, Mark, Mair Edmunds, Andrew Campbell, John Walls, and John Feehally. "Systemic Vasculitis in the 1980s—Is There an Increasing Incidence of Wegener's Graanulomatosis and Microscopic Polyarteritis?" J R Coll Physicians Lond 1990.

Andrews, Mark, et al. "Systemic Vasculitis in the 1980s—Is There an Increasing Incidence of Wegener's Graanulomatosis and Microscopic Polyarteritis?" J R Coll Physicians Lond 1990.