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2. ‘Statistical methods for assessing agreement between two methods of clinical measurement’;Bland;Lancet,1986
3. ‘Methods of clinical measurement in the hand’;Brand,1993
4. ‘Precision of test methods. 1: Guide for the determination and reproducibility for a standard test method’ (BS 5497 part 1);British Standards Institution,1979
5. ‘Range of motion measurement of the hand’;Cambridge-Keeling,1995