An item response analysis of the pediatric PROMIS anxiety and depressive symptoms scales.
Irwin DE; Stucky B; Langer MM; Thissen D; Dewitt EM; Lai JS; Varni JW; Yeatts K; DeWalt DA; Quality Of Life Research: An International Journal Of Quality Of Life Aspects Of Treatment, Care And Rehabilitation, 2010, vol. 19, issue 4, p 595, ISSN 15732649. ISBN 15732649.

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