Spreading of malignant neoplasms in the People's Republic of Bulgaria.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001943:Breast Neoplasms / Q000453:epidemiology; D002031:Bulgaria; D002648:Child; D002675:Child, Preschool; D002980:Climate; D005260:Female; D005843:Geography; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007938:Leukemia / Q000453:epidemiology; D008048:Lip Neoplasms / Q000453:epidemiology; D008175:Lung Neoplasms / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology*; D012737:Sex Factors; D012878:Skin Neoplasms / Q000453:epidemiology; D013274:Stomach Neoplasms / Q000453:epidemiology; D014594:Uterine Neoplasms / Q000453:epidemiology