Carl May has led the programme of work that has led to Normalization Process Theory, working at first with Frances Mair and Tracy Finch, but then with a much wider group of people. This group has been involved in developing, refining, and exploring the ideas that have led to NPT since 2000. The core group of researchers involved in this work is: Anne MacFarlane (NUI Galway), Christopher Dowrick (University of Liverpool), Linda Gask (University of Manchester), Shaun Treweek (Dundee University), Tim Rapley (Newcastle University), Luciana Ballini (Bologna), Bie Nio Ong (Keele University), Anne Rogers (University of Manchester), Elizabeth Murray (University College London), Glyn Elwyn (Cardiff University), France Légaré (Université Laval, Quebec), Catherine Pope (Southampton University), Jane Gunn (University of Melbourne), and Victor M Montori (The Mayo Clinic).