Berentsen, S., Ulvestad, E., Langholm, R., Beiske, K., Hjorth-Hansen, H., Ghanima, W., Sorbo, J. and Tjonnfjord, G. (2006) “Primary chronic cold agglutinin disease: a population based clinical study of 86 patients”, Haematologica. Pavia, Italy, 91(4), pp. 460-466. Available at: https://haematologica.org/article/view/3922 (Accessed: 2November2026).