1 Department of Endocrinology and Metabolic Diseases, Medical University of Lodz, Lodz, Poland
2 Department of Endocrinology and Metabolic Diseases, Polish Mother’s Memorial Hospital – Research Institute, Lodz, Poland
Correspondence: Department of Endocrinology and Metabolic Diseases, Medical University of Lodz, Polish Mother’s Memorial Hospital – Research Institute, Rzgowska 281/289; 93-338 Lodz, Poland; tel./fax: +48 42 271 11 40; e-mail: zbigniew.adamczewski@umed.lodz.pl