Funding for this research was provided by:
Peking University China Center for Health Economic Research
EuroQol Research Foundation
Article History
Received: 9 March 2018
Accepted: 23 October 2018
First Online: 8 November 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of Peking University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. A waiver of the informed consent was approved as this study did not provide any intervention to participants. Participants can withdraw at any time without any consequences.
: All authors have agreed to publish this study.
: Author GL declares that he has no conflict of interest. Authors ZY, NL and JB are members of the EuroQol Group.
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