aMRC Integrative Epidemiology Unit at the University of Bristol

bPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK

cSchool of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong Special Administrative Region, PR China

Correspondence to Qian Yang, MRC Integrative Epidemiology Unit at the University of Bristol, Office room OF28, Oakfield House, Oakfield Grove, Clifton, Bristol BS8 2BN, UK. Tel: +44 117 455 3007; e-mail: [email protected]

Received 13 February, 2024

Accepted 13 February, 2024