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Impact of COVID-19 pandemic on utilisation of healthcare services: a systematic review Moynihan, Ray; Sanders, Sharon; Michaleff, Zoe A.; et al 10.1136/bmjopen-2020-045343 Multiorgan impairment in low-risk individuals with post-COVID-19 syndrome: a prospective, community-based study Dennis, Andrea; Wamil, Malgorzata; Alberts, Johann; et al 10.1136/bmjopen-2020-048391 Examining the impacts of the COVID-19 pandemic on family mental health in Canada: findings from a national cross-sectional study Gadermann, Anne C.; Thomson, Kimberly C.; Richardson, Chris G.; et al 10.1136/bmjopen-2020-042871 Demographic risk factors for COVID-19 infection, severity, ICU admission and death: a meta-analysis of 59 studies Pijls, Bart G.; Jolani, Shahab; Atherley, Anique; et al 10.1136/bmjopen-2020-044640 Protocol for development of a reporting guideline (TRIPOD-AI) and risk of bias tool (PROBAST-AI) for diagnostic and prognostic prediction model studies based on artificial intelligence Collins, Gary S.; Dhiman, Paula; Andaur Navarro, Constanza L.; et al 10.1136/bmjopen-2020-048008 Public acceptance of COVID-19 vaccines: cross-national evidence on levels and individual-level predictors using observational data Lindholt, Marie Fly; Jorgensen, Frederik; Bor, Alexander; et al 10.1136/bmjopen-2020-048172 Frontline healthcare workers' experiences with personal protective equipment during the COVID-19 pandemic in the UK: a rapid qualitative appraisal Hoernke, Katarina; Djellouli, Nehla; Andrews, Lily; et al 10.1136/bmjopen-2020-046199 Impact of COVID-19 pandemic on mental health among general Bangladeshi population: a cross-sectional study Das, Rajesh; Hasan, Md Rakib; Daria, Sohel; Islam, Md Rabiul 10.1136/bmjopen-2020-045727 Levels of burn-out among healthcare workers during the COVID-19 pandemic and their associated factors: a cross-sectional study in a tertiary hospital of a highly burdened area of north-east Italy Lasalvia, Antonio; Amaddeo, Francesco; Porru, Stefano; Carta, Angela; Tardivo, Stefano; Bovo, Chiara; et al. 10.1136/bmjopen-2020-045127 Health effects of climate change: an overview of systematic reviews Rocque, Rhea J.; Beaudoin, Caroline; Ndjaboue, Ruth; Cameron, Laura; Poirier-Bergeron, Louann; et al. 10.1136/bmjopen-2020-046333 Correlates of intended COVID-19 vaccine acceptance across time and countries: results from a series of cross-sectional surveys Kerr, John R.; Schneider, Claudia R.; Recchia, Gabriel; Dryhurst, Sarah; Sahlin, Ullrika; et al. 10.1136/bmjopen-2020-048025  
Psychosocial impact on frontline health and social care professionals in the UK during the COVID-19 pandemic: a qualitative interview study Aughterson, Henry; McKinlay, Alison R.; Fancourt, Daisy; Burton, Alexandra 10.1136/bmjopen-2020-047353 Long COVID and the role of physical activity: a qualitative study Humphreys, Helen; Kilby, Laura; Kudiersky, Nik; Copeland, Robert 10.1136/bmjopen-2020-047632 Impact of temperature and relative humidity on the transmission of COVID-19: a modelling study in China and the United States Wang, Jingyuan; Tang, Ke; Feng, Kai; Lin, Xin; Lv, Weifeng; Chen, Kun; Wang, Fei 10.1136/bmjopen-2020-043863 How can we build and maintain the resilience of our health care professionals during COVID-19? Recommendations based on a scoping review Rieckert, Anja; Schuit, Ewoud; Bleijenberg, Nienke; ten Cate, Debbie; de Lange, Wendela; et al. COVID-19-related social support service closures and mental well-being in older adults and those affected by dementia: a UK longitudinal survey Giebel, Clarissa; Pulford, Daniel; Cooper, Claudia; Lord, Kathryn; Shenton, Justine; et al. 10.1136/bmjopen-2020-045889 Do school closures and school reopenings affect community transmission of COVID-19? A systematic review of observational studies Walsh, Sebastian; Chowdhury, Avirup; Braithwaite, Vickie; Russell, Simon; Birch, Jack Michael; et al 10.1136/bmjopen-2021-053371 Early perceptions and behavioural responses during the COVID-19 pandemic: a cross-sectional survey of UK adults Atchison, Christina; Bowman, Leigh Robert; Vrinten, Charlotte; Redd, Rozlyn; Pristera, Philippa; Eaton, Jeffrey; Ward, Helen 10.1136/bmjopen-2020-043577 Change in time spent visiting and experiences of green space following restrictions on movement during the COVID-19 pandemic: a nationally representative cross-sectional study of UK adults Burnett, Hannah; Olsen, Jonathan R.; Nicholls, Natalie; Mitchell, Richard 10.1136/bmjopen-2020-044067 Loneliness among older adults in the community during COVID-19: a cross-sectional survey in Canada Savage, Rachel D.; Wu, Wei; Li, Joyce; Lawson, Andrea; Bronskill, Susan E.; Chamberlain, Stephanie A.; et al. 10.1136/bmjopen-2020-044517