Item re-scaling of an Italian version of the Sickness Impact Profile: Effect of age and profession of the observers☆
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☆ This work has been supported in part by a grant from the Special Project (40%) on Cardiac Failure, the Italian Ministry of the University and the Scientific and Technological Research, and in part by a grant from the Italian National Research Council (CNR), Special Project on Aging (SP5).
PII: S0895-4356(96)00318-6
© 1997 Published by Elsevier Inc.
