Wong, S., Zhang, D., Sit, R., Yip, B., Chung, R. Y., Wong, C., Chan, D., Sun, W., Kwok, K. O., & Mercer, S. W. (2020). Impact of COVID-19 on loneliness, mental health, and health service utilisation: a prospective cohort study of older adults with multimorbidity in primary care. The British journal of general practice : Journal of the Royal College of General Practitioners70(700), e817–e824. https://doi.org/10.3399/bjgp20X713021