The authors regret to inform readers that there is an error in the last sentence beginning at the very end of page 436 (extended into page 437) in Section “2.2 Setting and Participant” under “2. Method”. We described: “A total of 469 formal questionnaires were distributed and 390 completed questionnaires were obtained (response rate: 83.16%). The correct description should have been: “A total of 423 formal questionnaires were distributed and 390 completed questionnaires were obtained (response rate: 92.19%). The authors would like to apologise for any inconvenience caused.
