Onchocerciasis is an infectious disease that can cause blindness and permanent skin damage. The source of onchocerciasis is a parasitic worm called Onchocerca volvulus. A person can contract this ...
THE incidence of sigmoidal volvulus in the United States is so low that few surgeons acquire great experience in dealing with it. It is reported by most authors as ranging between 1 and 4 per cent of ...
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