At the end of this article by Jonathan H C Evans that appeared in the “Evidence based paediatrics” series (17 November, pp 1167-9) we stated that the author had not declared any competing interests. Unfortunately, this is wrong; he had supplied us with the following statement, which somehow did not find its way into the published article. We apologise for this.
Jonathan H C Evans has received the following from Ferring Pharmaceutical, manufacturer of desmopressin: reimbursement for attending conferences, fees for lecturing, and a consultancy fee that was paid into a research fund.