Ethics
impaired hand function
All procedures were approved by New South Wales Government Health, South Eastern Sydney Local Health District, Human Research Ethics Committee (Reference: 12/192) and the University of New South Wales Human Research Ethics Committee (Reference: HC13388). This study was conducted in accordance with the Declaration of Helsinki (2013). Informed consent was obtained in writing prior to enrolment in the study. In the case of a participant with impaired hand function, a family member or independent third party was present to witness and provide written confirmation of verbal consent. We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research.