title: Author's reply.
authors.affiliation: Max Institute of Musculoskeletal Sciences, Max Healthcare, Saket, New Delhi, India.
authors.forename: Rajiv
authors.initials: R
authors.lastname: Thukral
authors.affiliation: Max Institute of Musculoskeletal Sciences, Max Healthcare, Saket, New Delhi, India.
authors.forename: Sks
authors.initials: S
authors.lastname: Marya
authors.affiliation: Max Institute of Musculoskeletal Sciences, Max Healthcare, Saket, New Delhi, India.
authors.forename: Chandeep
authors.initials: C
authors.lastname: Singh