This is a free publication of the Department of Medical Education, JIPMER, created as part of the doctoral work of Mrs. Sumathy M.K., PhD Scholar, Department of Medical Education, JIPMER. The views expressed in this book do not necessarily represent the views of the editors or policies of the Department of Medical Education, JIPMER. This printed and e-book publication has been published in good faith that the content provided by the contributors is original and collated through reliable academic sources. Every effort has been made to ensure the accuracy of the material presented. However, the editors, the contributors, publisher and printer cannot be held responsible for any inadvertent errors.