Symptom monitoring in childhood asthma: a randomized clinical trial comparing peak expiratory flow rate with symptom monitoring.
Ann Allergy Asthma Immunol. 2002 Mar;88(3):283-91. doi: 10.1016/S1081-1206(10)62010-8.
Ann Allergy Asthma Immunol. 2002.
PMID: 11926622
Clinical Trial.