title: Letter to the editor.
authors.affiliation: Associate Professor, Dept of Pediatrics, Armed Forces Medical College, Pune 40, India.
authors.forename: Deepak
authors.initials: D
authors.lastname: Joshi
authors.affiliation: Professor & HOD, Dept of Pediatrics, Armed Forces Medical College, Pune 40, India.
authors.forename: S S
authors.initials: SS
authors.lastname: Mathai