Protocol for a feasibility randomised controlled trial of the 'Outdoor' mobility intervention for older adults after hip fracture. - Sheehan, Katie J.; Bastas, Denise; Guerra, Stefanny; Creanor, Siobhan; Hulme, Claire; Lamb, Sallie; Martin, Finbarr C.; Sackley, Catherine; Smith, Toby; Bell, Philip; Hillsdon, Melvyn; Pope, Sarah; et al. (PLoS ONE, 2024)