<P> The Master of Surgery (Latin: Magister Chirurgiae) is an advanced qualification in surgery . Depending upon the degree, it may be abbreviated Ch. M., M.Ch., M. Chir. or M.S. At a typical medical school the program lasts between two and three years . The possession of a medical degree is a prerequisite . The Ch. M. can be awarded on both clinical and academic competency or on academic competency . The regulations may ask for surgical experience and a thesis topic that is not purely medical . </P> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table>

What is the full form of ms in medical