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Six databases (PubMed, EMBASE, Web of Science, Scopus, CINAHL and ProQuest -Health Medical Collection) will be searched to retrieve studies focusing on the development and psychometric properties of disease-specific HRQoL instruments for patients with food allergies and/or food intolerances and their caregivers between 1 December 2021 and 31 December 2021. Two researchers will be responsible for literature screening, data extraction and literature evaluation, independently. Disagreements will be addressed by discussion or the involv