Qualitative evaluation of the new outdoor advertising restrictions policy in Bristol: stakeholder perspectives on the policy implementation. - Harding, Sarah; Nobles, James; Horwood, Jeremy; Buckland, Genevieve; Toumpakari, Zoi; Jago, Russ; Hollingworth, William; Cummins, Steve; Nairn, Agnes; Rejon, Carlos Sillero; Blake, Sarah; de Vocht, Frank (Lancet, 2024)