In Muirhead's letter to the editor1 regarding our recent publication,2 he identifies three studies of thyroid cancer incidence in radiation-exposed occupations and with occupational radiation exposures that were not included in our review. We appreciate his interest in our review and his identification of these missing papers. The Muirhead et al 3 and Kesminiene et al 4 publications were eligible for inclusion in our review. Although the search engine we used to identify articles had the ability to search all text in a document and …