Correction to: Common maternal infections during pregnancy and childhood leukaemia in the offspring: findings from six international birth cohorts. (27th October 2021) - He, Jian-Rong; Hirst, Jane E; Tikellis, Gabriella; Phillips, Gary S; Ramakrishnan, Rema; Paltiel, Ora; Ponsonby, Anne-Louise; Klebanoff, Mark; Olsen, Jørn; Murphy, Michael F G; Håberg, Siri E; Lemeshow, Stanley; et al.