Optometry in times of pandemic: Spanish flu (1919) versus COVID ‐19 (2020) Published on 2020-06-242023-06-30 Journal: Clinical & experimental optometry [저자] Nathan Efron, Suzanne E Efron [Category] SARS, PMC URL Pubmed URL [DOI] 10.1111/cxo.13094 [Source] PMC All Keywords