Laurberg, P, Vestergaard, H, Nielsen, S, Christensen, S E, Seefeldt, T, Helleberg, K & Pedersen, K M 2007, ' Sources of circulating 3,5,3-Triiodothyronine in hyperthyroidism estimated after blocking of type 1 and type 2 iodothyronine deiodinases ', Jorurnal of Clinical Endocrinology and Metabolism, vol. 92, no. 6, pp. 2149-2156 . Laurberg, P, Vestergaard, H, Nielsen, S, Christensen, S E, Seefeldt, T, Helleberg, K & Pedersen, K M 2007, ' Sources of circulating 3,5,3'-triiodothyronine in hyperthyroidism estimated after blocking of type 1 and type 2 iodothyronine deiodinases ', Journal of Clinical Endocrinology and Metabolism, vol. 92, no. 6, pp. 2149-56 . https://doi.org/10.1210/jc.2007-0178