A comparison of face-to-face and online training in improving managers' confidence to support the mental health of workers - Gayed, A; Tan, L; LaMontagne, AD; Milner, A; Deady, M; Milligan-Saville, JS; Madan, I; Calvo, RA; Christensen, H; Mykletun, A; Glozier, N; Harvey, SB (Internet Interventions, 2019)