Ivermectin for COVID-19 in adults in the community (PRINCIPLE): an open, randomised, controlled, adaptive platform trial of short- and longer-term outcomes by Hayward, G, Yu, L-M, Little, P, Gbinigie, O, Shanyinde, M, Harris, V, Dorward, J, Saville, BR, Berry, N, Evans, PH, Thomas, NP, Patel, MG, Richards, D, van Hecke, O, Detry, MA, Saunders, C, Fitzgerald, M, Robinson, J, Latimer-Bell, C, Allen, J, Ogburn, E, Grabey, J, de Lusignan, S, Hobbs, FR, Butler, CC