Lessons learned from the London Exercise and Pregnant (LEAP) Smokers randomised controlled trial process evaluation: implications for the design of physical activity for smoking cessation interventions during pregnancy

• Nikoletta GiatrasCity, University of London
• Elisabeth WanninkhofSt George's, University of London
• Miranda LeontowitschGoethe University Frankfurt
• Beth A. LewisUniversity of Minnesota
• Adrian Haffner TaylorPeninsula College of Medicine and Dentistry
• Sue E CooperUniversity of Nottingham
• MICHAEL H USSHERSt George's, University of London