RT Journal Article SR Electronic T1 Vitamin D and COVID-19 in older age: evidence versus expectations JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 10 OP 11 DO 10.3399/bjgp21X714377 VO 71 IS 702 A1 Clark, Christopher E A1 Masoli, Jane A1 Warren, Fiona C A1 Soothill, James A1 Campbell, John L YR 2021 UL http://bjgp.org/content/71/702/10.abstract AB