http://orcid.org/0000-0001-7772-1496Mark E Howard1,2,3,4, Anna Ridgers1,2,4 1 Respiratory and Sleep Medicine, Austin Hospital, Heidelberg, Victoria, Australia 2 Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia 3 Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia 4 Institute for Breathing and Sleep, Heidelberg, Victoria, Australia Correspondence to Dr Mark E Howard, Respiratory and Sleep Medicine, Austin Hospital,...