title: An 11-year-old boy with dark skin, swallowing difficulty and absence of tears.
authors.affiliation: Department of Pediatrics, The Institute of Child Health, Kolkata, West Bengal, India. dr_dkm@yahoo.co.in
authors.forename: Debkrishna
authors.initials: D
authors.lastname: Mallick
authors.forename: Rajoo
authors.initials: R
authors.lastname: Thapa