Frequency-volume chart: The minimum numb
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Erik Schick; Martine Jolivet-Tremblay; Charles Dupont; Pierre E. Bertrand; Jocel
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Article
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2003
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John Wiley and Sons
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English
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## Abstract ## Aims There is wide variation in the number of days necessary to maintain a diary and still furnish reliable data on which to base a sound clinical assessment. Estimates range from 1 day to 2 weeks, 7 days probably being the criterion standard. The goal of this retrospective study wa