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Age  Height(inches) 
 Predicted Peak Flow (L/min)

 

REFERENCE
Gregg I, Nunn AJ. Peak expiratory flow in normal subjects. Br Med J 1973;3:282-284.
Brancazio LR, Laifer SA, Schwartz T. Peak expiratory flow rate in normal pregnancy.Obstet Gynecol 1997 Mar;89(3):383-6


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