Funding for this research was provided by:
Hong Kong Research Institute of Textiles and Apparel (No. G-HKBU202/15)
Hong Kong Baptist University (No. FRG2/13-14/065)
Received: 31 December 2018
Accepted: 30 December 2019
First Online: 14 January 2020
Ethics approval and consent to participate
: According to the specifications of the German Research Foundation [CitationRef removed], an ethical statement for this study was not required since the criteria for such a statement were not fulfilled (for instance, examination of patients, risk for the respondents, lack of information about the goals of the study, use of invasive methods). In Hong Kong side, the study received ethical approval by the Committee for the Use of Human & Animal Subjects in Teaching & Research (HASC) of Hong Kong Baptist University (FRG2/13–14/065). We confirm that all participants were informed about the purpose of the study with a written informed consent form prior to the face-to-face-survey.
: Not applicable.
: The authors declare that they have no competing interests.