(1)
Gravirovska, N. G.; ZalyubovskŠ°Šž. I. REGIONAL PECULIARITIES OF DUODENUM PEPTIC ULCER PREVALENCE INDEXES AND TENDENCY OF THEIR DEVELOPMENT IN KHARKOV AND DNEPROPETROVSK REGIONS. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. 1, 37-42.