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5. Medical security system in Bulgaria: retrospections and prospects. Apostolov M Agapit; 1995; (2):85-91. PubMed ID: 11619918 [No Abstract] [Full Text] [Related]
6. [Not Available]. Ojeniyi AA Hist Med Vet; 1984; 9(2):36-49. PubMed ID: 11637230 [No Abstract] [Full Text] [Related]