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The coexistence of two histologically different primary tumours in the same brain region is relatively rare. The situation where these tumours in collision appear in an area of a previously excised(More)
The major risk factor of perinatal transmission of Hepatitis B virus (HBV) infection is the level of maternal HBV-deoxyribonucleic acid (DNA) during the third trimester of pregnancy. The primary aim(More)