Dr. Manu Madan is an Assistant Professor in the Department of Pulmonary Medicine at Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, which is one of the largest tertiary care hospitals and a premiere DM institute of India. He completed his MBBS from Maulana Azad Medical College in the year 2011. He specialized in the field of pulmonary medicine, doing post-graduation (MD) from Vallabhbhai Patel Chest Institute, New Delhi. Subsequently, he did his DM in Pulmonary, Critical Care and Sleep Medicine from the prestigious All India Institute of Medical Sciences, New Delhi. He has extensive teaching and research experience with vast academic contributions to the specialty. He has multiple accolades and awards to his name along with various publications in national and international journals. He has been actively taking a keen interest in enlightening young minds through various platforms. This book is an effort in the same direction.