Pryor was until recently Head of Physiotherapy at the Royal Brompton and Harefield NHS Trust , London - Britain's leading chest and heart hospital. She is now a research fellow there and is combining work on research with the latest in clinical practice. She was co-editor to the first two editions of this book.Prasad was a contributor to the previous edition of this book. Her specialist area of practice is with children with cystic fibrosis. Like Pryor she is working as a researcher in a centre of clinical excellence.Both authors have given papers at international meetings for both doctors and physical therapists.