[1] Univ Delaware, Dept Psychol & Brain Sci, 108 Wolf Hall, Newark, DE 19716 USA
[2] Univ St Andrews, Sch Med, St Andrews, Scotland
[3] Christiana Care, Helen F Graham Canc Ctr & Res Inst, Newark, DE USA
[4] Wirral Univ, Oral & Maxillofacial Dept, Teaching Hosp NHS Fdn Trust, Liverpool, England
[5] Univ Stirling, Div Psychol, Stirling, Scotland
[6] Univ Aberdeen, Sch Psychol, Aberdeen, Scotland
[7] Univ Bristol, Bristol Dent Sch, Bristol, England