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Boldvina operation

Boldvina operation (J. F. Baldwin, the American gynecologist, 1850-1936) – the surgery applied at a vagina aplasia during which formation from a piece of a sigmoid or small bowel of an artificial vagina is carried out.

 
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Was considered earlier that yawning enriches an organism with oxygen. However this opinion was disproved. Scientists proved that yawning, the person cools a brain and improves its working capacity.