Amos Lal1, Ajay Kumar Mishra2, Kamal Kant Sahu2, Raul Davaro3. 1. Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA. Electronic address: manavamos@gmail.com. 2. Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA, USA. 3. Division of Infectious Diseases, Worcester Medical Center, Reliant Medical Group, Worcester, MA, USA.