[1] Univ Hosp Heidelberg, Dept Gen Practice & Hlth Serv Res, Heidelberg, Germany
[2] Heidelberg Univ, Fac Med, Heidelberg, Germany
[3] VA Ann Arbor Healthcare Syst, Dept Vet Affairs, Ctr Clin Management Res, Ann Arbor, MI USA
[4] Univ Michigan, Sch Med, Dept Learning Hlth Sci, Ann Arbor, MI USA
[5] Natl Disabil Insurance Agcy, Melbourne, Vic, Australia
[6] Univ Manchester, Manchester, Lancs, England
[7] NIHR Appl Res Collaborat Greater Manchester, Manchester, Lancs, England