Role of Vitamin E and Vitamin A in Oral Mucositis Induced by Cancer Chemo/ Radiotherapy- A Meta-analysis oleh Nallan Csk Chaitanya, Arvind Muthukrishnan, Dara Balaji Gandhi Babu, Chinta Sanjeeva Kumari, Madishetty Adi Lakshmi, Gayathri Palat, Khwaja Shoeb Alam