Confirmatory validation of the patient health questionnaire - 4 (PHQ-4) for gastrointestinal disorders: A large-scale cross-sectional survey
Pragalathan Apputhurai, Olafur S. Palsson, Shrikant I. Bangdiwala, Ami D. Sperber, Antonina Mikocka-Walus, Simon R. Knowles
Research output: Contribution to journal › Article › peer-review
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