title: Authors' Reply.
authors.affiliation: Department of Community Medicine, Saveetha Medical College, Saveetha University, Chennai, Tamilnadu, India. dinsha85@gmail.com.
authors.forename: Jeyapal Dinesh
authors.initials: JD
authors.lastname: Raja
authors.affiliation: Department of Community Medicine, University College of Medical Sciences, Delhi 110095, India.
authors.forename: Sanjiv Kumar
authors.initials: SK
authors.lastname: Bhasin
keywords: Call handler; Sleep quality; Smoking; Social support; Workload