Authors’ contributions
RS
Design of the study: MK, AM; development of the program: MK, AK, TS, YE, AM, SS, HK, SI, KY; development of question items: MK, YE, SS, AM; coordination with research fields: AM, KY, MK; quantitative analysis: RS; qualitative analysis: MK, KK; data management: MK, KK, HK; manuscript preparation: MK. All the authors have checked and confirmed the final manuscript prior to submission. The author(s) read and approved the final manuscript.