Dear Editor. Oral Submucous Fibrosis (OSF) is a well recognised Oral Potentially Malignant Disorders (OPMD) that is primarily attributed to areca nut chewing in raw form or commercial preparations. Areca nut is also an independent risk factor for developing oral cancer. The worldwide rate of malignant transformation from OSF is 2. https://www.freeebookfinder.com/product-category/jacks-and-stands/