Response to comment from Egger and McKee entitled 'Unreliable evidence from problematic risk of bias assessments: Comment on Begh et al., 'Electronic cigarettes and subsequent cigarette smoking in young people: A systematic review"' - Hartmann-Boyce, J; Begh, R; Conde, M; Shahab, L; Jackson, SE; Pesko, MF; Livingstone-Banks, J; Kale, D; Rigotti, NA; Fanshawe, T; Kneale, D; Lindson, N (Addiction, 2025)