Change in health outcomes for First Nations children with chronic wet cough: rationale and study protocol for a multi-centre implementation science study oleh Pamela J. Laird, Roz Walker, Gabrielle McCallum, Maree Toombs, Melanie Barwick, Peter Morris, Robyn Aitken, Matthew Cooper, Richard Norman, Bhavini Patel, Gloria Lau, Anne B. Chang, André Schultz