Funding for this research was provided by:
Text and Data Mining valid from 2019-07-25
Received: 5 April 2019
Accepted: 3 July 2019
First Online: 25 July 2019
: Not applicable (All materials purchased from a butcher.)
: Not applicable.
: This work was financially and technically supported by Olympus. The ultrasonic devices were provided by Olympus.There are no additional competing interests and none of abovementioned companies influenced the study design, data collection, or data interpretation.