Funding for this research was provided by:
Received: 10 June 2021
Accepted: 29 November 2021
First Online: 24 December 2021
: Interview study protocols were approved by an Institutional Review Board (Advarra Inc., MD, US) and recruitment procedures complied with Health Insurance Portability and Accountability Act regulations. All participants provided their written informed consent prior to interviews and were remunerated upon interview completion.
: Not applicable.
: MKV is employed by Evidera. LLS and RMS were employed by Evidera at the time this work was completed. FM, CM, WW, and RHS are employed by Cara Therapeutics, Inc.