Prevalence of thyroid diseases in patients with acromegaly: results of an Italian multi-center study. - Gasperi,M.; Martino,E.; Manetti,L.; Arosio,M.; Porretti,S.; Faglia,G.; Mariotti,S.; Colao,A.M.; Lombardi,G.; Baldelli,R.; Camanni,F.; Liuzzi,A. (J Endocrinol Invest, 2002)