Lomborg, N, Jakobsen, M, Bode, C S & Junker, P 2019, ' IgG4-related disease in patients with newly diagnosed idiopathic retroperitoneal fibrosis : a population-based Danish study ', Scandinavian Journal of Rheumatology, vol. 48, no. 4, pp. 320-325 . https://doi.org/10.1080/03009742.2018.1551963