“…The types of reviews were mainly systematic reviews ( n = 11) 18,24,28,29,31,34,36,37,39,44,45 or narrative reviews ( n = 5). 19,22,23,25,26 Diabetes, both type 1 and type 2, were the most studied chronic diseases ( n = 9), 18,19,26,27,29,36,38,41,45 followed by heart failure ( n = 5), 21,24,30,31,35 cardiovascular disease ( n = 2), 20,23 chronic kidney disease ( n = 2), 22,25 COPD ( n = 1), 32 asthma ( n = 1), 43 cancer ( n = 1), 42 hypertension ( n = 1) 33 and low back pain ( n = 1); 34 five reviews included studies on a combination of diseases. 28,37,39,40,44 The number of primary studies in the reviews found varied between 3 and 103; however, most of the time only a subset of these studies was considered relevant for this review of reviews.…”