“…Of the 27 SRs, two only included randomized controlled trials [ 21 , 23 ], six included both experimental and quasi-experimental designs [ 15 , 17 , 19 , 25 , 30 , 32 ], and 19 included both quantitative and qualitative research [ 6 , 16 , 18 , 20 , 22 , 24 , 26 – 40 ]. Thirteen SRs included only policy-makers or managers as the target [ 6 , 18 , 22 , 25 – 27 , 31 – 34 , 37 – 39 ], and the remaining 14 also included healthcare workers, researchers, legislative staff members, the public, patients, students and other stakeholders such as nongovernmental organizations or international organizations.…”