“…This has rate-limiting implications; that is, the knowledge-to-action gap [ 29 ] between the ‘what’ and ‘how’ of patient engagement in research, as well as the interrelationship between them, may potentially limit its implementation, ongoing evolution and uptake by health research disciplines [ 33 – 35 ]. This could be in part due to the several actual or perceived barriers to engaging patients in research, including an increase in resources required [ 30 , 35 – 39 ], the possibility of patient voices inadvertently shifting the research agenda away from original purpose [ 15 , 40 , 41 ], a lack of supportive infrastructure and culture [ 21 , 29 ], a lack of clarity in taxonomy of patient engagement in health research [ 14 , 42 , 43 ], tension between physicians and patients [ 44 ], and tokenism [ 15 , 30 ].…”