Received: 27 August 2021
Revised: 7 September 2021
Accepted: 9 September 2021
First Online: 17 October 2021
Compliance with ethical standards
: K. Kario is contracted as an external medical adviser to Terumo Corporation. K. Kario has received speaker fees and works as a consultant to JIMRO Co.; research grant from Otsuka Medical Devices, Co., all outside the submitted work. H. Kagitani, S. Hayashi, S. Hanamura, and K. Ozawa are full-time employees of Terumo Corporation. H. Kanegae has no conflicts of interest to declare.