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Authors
Yusuf, Abdulrasheed Hassan
Ardo, Bello Usman
Thavorncharoensap, Montarat https://orcid.org/0000-0002-8256-2167
Roudijk, Bram https://orcid.org/0000-0001-5000-0875
Purba, Fredrick Dermawan https://orcid.org/0000-0002-7336-3043
Yang, Zhihao https://orcid.org/0000-0001-5468-0847
Liao, Meixia
Chaikledkaew, Usa https://orcid.org/0000-0001-9457-9823
Youngkong, Sitaporn https://orcid.org/0000-0002-2448-3954
Thakkinstian, Ammarin https://orcid.org/0000-0001-9991-386X
Agada-Amade, Yakubu Adole
Amole, Taiwo Gboluwaga
Sambo, Mohammed Nasir
Ohiri, Kelechi
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Funding
Funding for this research was provided by:
National Health Insurance Authority
EuroQol Research Foundation
Mahidol University
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Article History
Received: 15 October 2025
Accepted: 8 June 2026
First Online: 15 June 2026
Declarations
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: Bram Roudijk is employed by the EuroQol Research Foundation. Fredrick Dermawan Purba, Bram Roudijk and Zhihao Yang are members of the EuroQol Group.
: Written informed consent was obtained from all participants.
: Not applicable.
: This study was performed in line with the principles of the Declaration of Helsinki . Ethical approval was obtained from the National Health Research Ethics Committee of Nigeria (NHREC/01/01/2007) and Mahidol University Institutional Review Board (No.78.0319/EC.0447).
