Help for Future Research: Lessons Learned in Trial Design, Recruitment, and Delivery From the "hELP" Study. Issue 4 (October 2018) - Simpson, Rosalind C.; Murphy, Ruth; Bratton, Daniel J.; Sydes, Matthew R.; Wilkes, Sally; Nankervis, Helen; Dowey, Shelley; Bell, Hazel; Cruickshank, Margaret; Gibbon, Karen; Green, Cathy M.; Wong, Christina; et al.