title: Authors' reply.
authors.affiliation: Max Institute of Orthopedics and Joint Replacement, Max Super Specialty Hospitals, 1, Press Enclave Road, Saket, New Delhi - 110 017, India.
authors.forename: Sanjiv Kumar Singh
authors.initials: SK
authors.lastname: Marya
authors.forename: Rajiv
authors.initials: R
authors.lastname: Thukral
authors.forename: Chandeep
authors.initials: C
authors.lastname: Singh