Improving smoking cessation care in pregnancy at Aboriginal Medical Services: ‘ICAN QUIT in Pregnancy’ step-wedge cluster randomised study oleh Yael Bar-Zeev, Michelle Bovill, Billie Bonevski, Maree Gruppetta, Jennifer Reath, Peter O’Mara, Marilyn Clarke, Alan Clough, Kristin Carson, Katherine Boydell, Ling Li Lim, Roger Smith, Yvonne Cadet-James, Renee Bittoun, Lou Atkin, Brett Cowling, Lisa Orcher