Quantifying cost and health-related quality of life outcomes in different multimorbidity trajectories: a systematic review protocol.

31 It is expected that there may be significant variability in the way multimorbidity is defined within included studies, 32 including in terms of which specific LTCs are included. 33 Based on existing evidence, the inclusion of diagnoses which may be variously considered as conditions or risk factors, such a hypertension, hypercholesterolaemia,

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