Abstracts and short papers from the 5th Congress of the Polish Thyroid Association, Poznan, 3-5 September, 2015. Issue 1 (December 2016) - Wartofsky, Leonard; Smyth, Peter; Köhrle, Josef; Anielski, Ryszard; Slowiaczek, Marian; Orlicki, Pawel; Czepczynski, Rafal; Daroszewski, Jacek; Hubalewska-Dydejczyk, Alicja; Kowalska, Aldona; Kurowska, Maria; Malicka, Joanna; et al.