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Reference for the PASI FELDMAN:

• Feldman SR, Krueger GG. Psoriasis assessment tools in clinical trials. Ann Rheum Dis. 2005;64(Suppl 2):ii65–ii68.
• CDISC believes this instrument to be in the public domain, but you should perform your own assessment.

3 The RS Domain Model

3.1 Assumptions for the RS Domain Model

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