Leightley, D, Lavelle, G, White, K, Sun, S, Matcham, F, Ivan, A, Oetzmann, C, Penninx, B WJH, Lamers, F, Siddi, S, Mario Haro, J, Germeys, I M, Bruce, S, Nica, R, Wickersham, A, Annas, P, C. Mohr, D, Simblett, S, Wykes, T, Cummins, N, Folarin, A, Conde, P, Ranjan, Y, Dobson, R, Narayan, V & Hotopf, M 2021, ' Investigating the impact of coronavirus 2 lockdown on adults with a recent history of recurrent major depressive disorder: A multi-centre study using remote measurement technology ', BMC Psychiatry .