For citations:

Yakovleva L.P., Dobrokhotova V.Z., Pavlovskaya A.I., Kondratyeva T.T. PRIMARY HYPERPARATHYROIDISM AT THE BACKGROUND OF PARATHYROID GLAND HYPERPLASIA. PECULIARITIES AND DIFFICULTIES OF DIAGNOSTICS. Head and Neck Tumors (HNT). 2015;5(1):49-53. (In Russ.) https://doi.org/10.17650/2222-1468-2015-1-49-53