Braungart S, Craigie R J, Farrelly P, et al. Paediatric Horner’s syndrome: is investigation for underlying malignancy always required? (Arch Dis Child 2019;104:984–7).

During the production process the citation numbers in table 3 were incorrectly inserted. They should be as follows: Sauer et al ⁸, Woodruff et al ⁹, Jeffery et al ¹⁰, George et al ¹¹, Mahoney et al ¹², Smith et al ¹³, Kadom et al ¹⁴, Martin et al ¹⁷.