International health policy survey in 11 countries: assessment of non-response bias in the Norwegian sample by Bukholm Geir, Iversen Hilde H, Bjertnaes Oyvind A

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General practitioners' evaluation of community psychiatric services: responsiveness to change of the General Practitioner Experiences Questionnaire (GPEQ) by Damerell Elisabeth, Nieland Arjan, Bjertnaes Oyvind A, Garratt Andrew

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Parent experiences questionnaire for outpatient child and adolescent mental health services (PEQ-CAMHS Outpatients): reliability and validity following a national survey by Holmboe Olaf, Bjertnaes Oyvind A, Garratt Andrew M, Hanssen-Bauer Ketil

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The Generic Short Patient Experiences Questionnaire (GS-PEQ): identification of core items from a survey in Norway by Olsen Rolf, Bjertnaes Oyvind A, Sjetne Ingeborg, Iversen Hilde, Bukholm Geir

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Rasch analysis of the Psychiatric Out-Patient Experiences Questionnaire (POPEQ) by Iversen Hilde H, Garratt Andrew M, Olsen Rolf V, Bjertnaes Oyvind A

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