Funding for this research was provided by:
japan health research promotion bureau (2019-(1)-4)
national cancer center research and development fund (30-A-18, 2021-A-19)
japan society for the promotion of science (21K17319)
Received: 17 August 2021
Accepted: 1 February 2022
First Online: 2 March 2022
: The study protocol was approved by the Ethical Committee of the National Cancer Center Japan (No. 2019-034). For both semi-structured interviews and focus groups, we obtained verbal consent for participation from each participant prior to data collection.
: Not applicable.
: The authors declare that they have no competing interests.