title: Reply.
authors.affiliation: Associate Professor (Physiology), Oman Medical Collage, Sultanate of Oman, Pune 411004, India.
authors.forename: C V
authors.initials: CV
authors.lastname: Apte
authors.affiliation: Commanding Officer, 58 Forward Medical Store Deport, C/o 99 APO, India.
authors.forename: R K S
authors.initials: RK
authors.lastname: Tomar
authors.affiliation: Classified Specialist (Physiology), Base Hospital, New Delhi, India.
authors.forename: D
authors.initials: D
authors.lastname: Sharma