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Whiting, Penny; Toerien, Merran; de Salis, Isabel; Sterne, Jonathan A C; Dieppe, Paul; Egger, Matthias; Fahey, Tom (2007). A review identifies and classifies reasons for ordering diagnostic tests. Journal of clinical epidemiology, 60(10), pp. 981-9. New York, N.Y.: Elsevier 10.1016/j.jclinepi.2007.01.012
