title: Epidemiologic characteristics of urinary system tumors and Balkan nephropathy in an endemic region of Bulgaria.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002031:Bulgaria; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000453:epidemiology; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged; D009395:Nephritis, Interstitial / Q000150:complications / Q000453:epidemiology* / Q000235:genetics; D012737:Sex Factors; D014516:Ureteral Neoplasms / Q000453:epidemiology; D014565:Urogenital Neoplasms / Q000150:complications / Q000453:epidemiology* / Q000235:genetics