Jelsig, A. M. (Creator), Karstensen, J. G. (Creator), Jespersen, N. (Creator), Ketabi, Z. (Creator), Lautrup, C. (Creator), Rønlund, K. (Creator), Sunde, L. (Creator), Wadt, K. (Creator), Thorlacius-Ussing, O. (Creator), Qvist, N. (Creator) (2021). Additional file 1 of Danish guidelines for management of non-APC-associated hereditary polyposis syndromes. Figshare. 10.6084/m9.figshare.16767488.v1