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Edelman N, Cassell JA, de Visser R, Prah P, Mercer CH.Edelman N, et al. Among authors: cassell ja.BMC Public Health. 2017 Jan 4;17(1):5. doi: 10.1186/s12889-016-3918-8.BMC Public Health. 2017.PMID: 28049459Free PMC article.
Cassell JA, Mercer CH, Sutcliffe L, Petersen I, Islam A, Brook MG, Ross JD, Kinghorn GR, Simms I, Hughes G, Majeed A, Stephenson JM, Johnson AM, Hayward AC.Cassell JA, et al.BMJ. 2006 Feb 11;332(7537):332-4. doi: 10.1136/bmj.38726.404120.7C. Epub 2006 Jan 26.BMJ. 2006.PMID: 16439371Free PMC article.