Examining variation in the measurement of multimorbidity in research: a systematic review of 566 studies oleh Iris Szu-Szu Ho, PhD, Amaya Azcoaga-Lorenzo, PhD, Ashley Akbari, MSc, Corri Black, ProfPhD, Jim Davies, ProfPhD, Peter Hodgins, MBBS, Kamlesh Khunti, ProfPhD, Umesh Kadam, ProfPhD, Ronan A Lyons, ProfPhD, Colin McCowan, ProfPhD, Stewart Mercer, ProfPhD, Krishnarajah Nirantharakumar, MD, Bruce Guthrie, ProfPhD