Knoop, T., K. Larsen, F. Leh, A. Hemsing, I. Teigen, and H. Reikvam. “Severe Nephritis As Initial Sign of Waldenström’s Macroglobulinemia”. Clinics and Practice, Vol. 9, no. 4, Dec. 2019, doi:10.4081/cp.2019.1184.