Joanne Protheroe1
, Lorraine S Wallace2
, Gillian Rowlands3
and Jennifer E DeVoe4 
1NPCRDC, University of Manchester, 5th floor Williamson Building, Oxford Road, Manchester M13 9PL, UK
2University of Tennessee Graduate School of Medicine, Department of Family Medicine, 1924 Alcoa Hwy, U-67, Knoxville, TN 37920, USA
3Institute of Primary Care and Public Health, Department of Health GP Health Literacy Champion, Institute of Primary Care and Public Health, Faculty of Health and Social Care, London South Bank University, 103 Borough Road, London SE1 0AA, UK
4Department of Family Medicine, Oregon Health and Science University, 3181 Sam Jackson Park Rd, FM, Portland, OR 97239, USA