Fig. 1.

Publications linked to the references they cite to underpin this guidance. Circles within the black rectangle: the 28 publications found to state this guidance. By colour: blue, without supporting citations; orange, provide non-relevant supporting citations; green, provide relevant supporting citations. Outside the rectangle, in squares, cited human publications that are not relevant: in light blue, primary OP pesticide papers; in red, primary cardiac disease papers; in purple, primary nerve agent papers. Triangles: animal studies. Numbers correspond with the references. Publications from the same book, with a different edition, are placed together (refs 27 and 29, and 38 and 39). Of the 28 publications, 11 cited a source for their statement while 17 did not provide any supporting evidence. The 11 publications cited 18 sources on 27 occasions. Eleven citations were to relevant but secondary sources^{18,20,22,24,26,29,38} while seven citations were of irrelevant primary or secondary sources (patients with myocardial infarctions, nerve agent studies, or patients with pesticide poisoning but no ventricular dysrhythmias^{10,53,62–64}). Animal studies with OP nerve agents, pesticide active ingredients, or myocardial infarctions^{51,54,55,58,59} were cited on eight occasions (colour version of this figure can be found in the online version at www.informahealthcare.com/ctx).