In India, 30 per cent of all cancers occur in the mouth of pharynx, and are believed to be due to the chewing of betel quid. Between 80 and 90 per cent of cancers are dependant, directly or indirectly, on enviromental factors
A man is placing betel quid into his mouth. Verso: WHO/14564. SEARO. Cancer. SM6-1978.
Copyright:
WHO must be mentioned in the accompanying text and/or given credit.
This item may be under copyright protection. Please ask copyright owner for permission before publishing.
Copyright Holder:
World Health Organization; Source: Record; Research date: 20151009