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Balneotherapy and quality assessment: interobserver reliability of the Maastricht criteria list and the need for blinded quality assessment.
Authors: Verhagen A, de Vet HC, de Bie R, Kessels AG, Boers M, Knipschild PG Source: J Clin Epidemiol. 1998 Apr;51(4):335-41 DOI: 10.1016/S0895-4356(97)00297-7 Language: English Availability: abstract