PT - JOURNAL ARTICLE AU - Jennifer Pierce AU - Afton Hassett AU - Jill R Schneiderhan AU - Jude Divers AU - Chad M Brummett AU - Jenna McAfee TI - Letter to the editor: response to Zheng <em>et al</em> AID - 10.1136/rapm-2020-101911 DP - 2021 May 01 TA - Regional Anesthesia &amp; Pain Medicine PG - 463--464 VI - 46 IP - 5 4099 - http://rapm.bmj.com/content/46/5/463.short 4100 - http://rapm.bmj.com/content/46/5/463.full SO - Reg Anesth Pain Med2021 May 01; 46