Ahmed S, Sawatzky R, Levesque JF, Ehrmann-Feldman D, Schwartz CE. Minimal evidence of response shift in the absence of a catalyst. Qual Life Res. 2014 Nov;23(9): 2421-30. doi: 10.1007/s11136-014-0699-3. Epub 2014 Jun 5. PMID: 24899546.
Ahmed S, Sawatzky R, Levesque JF, Ehrmann-Feldman D, Schwartz CE. Minimal evidence of response shift in the absence of a catalyst. Qual Life Res. 2014 Nov;23(9): 2421-30. doi: 10.1007/s11136-014-0699-3. Epub 2014 Jun 5. PMID: 24899546.
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