PT - JOURNAL ARTICLE AU - Jian Luo TI - Key Principles for Conducting a Good Randomized Controlled Trial AID - 10.4187/respcare.10426 DP - 2022 Sep 01 TA - Respiratory Care PG - 1211--1213 VI - 67 IP - 9 4099 - http://rc.rcjournal.com/content/67/9/1211.short 4100 - http://rc.rcjournal.com/content/67/9/1211.full