CJCP     2021 23 (6):  645-649    ISSN: 1008-8830  CN: 43-1301/R Role of peak expiratory flow in the assessment and management of asthma in children FENG Yong, SHANG Yun-Xiao Department of Pediatric Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China Received: 2021-01-25  Revised: 2021-04-05  Online: null Supporting info