RT Journal Article SR Electronic T1 Key Principles for Conducting a Good Randomized Controlled Trial JF Respiratory Care FD American Association for Respiratory Care SP 1211 OP 1213 DO 10.4187/respcare.10426 VO 67 IS 9 A1 Jian Luo YR 2022 UL http://rc.rcjournal.com/content/67/9/1211.abstract AB