Johnson, Miriam J., Rutterford, Leah, Sunny, Anisha, Pask, Sophie, de Wolf-Linder, Susanne, Murtagh, Fliss E.M., Ramsenthaler, Christina, "Benefits of specialist palliative care by identifying active ingredients of service composition, structure, and delivery model: A systematic review with meta-analysis and meta-regression", PLoS Medicine, 2024