Exploring the barriers to, and importance of, participant diversity in early-phase clinical trials: an interview-based qualitative study of professionals and patient and public rep... oleh Cindy Cooper, Katie Biggs, Alexander Rothman, Christina Yap, Fiona Thistlethwaite, Della Ogunleye, Munyaradzi Dimairo, Robin Chatters, Shamila Ditta, Jonathan Woodward