Forced expiratory flow between 25% and 75% of vital capacity and FEV1/forced vital capacity ratio in relation to clinical and physiological parameters in asthmatic children with normal FEV1 values.
Simon MR, Chinchilli VM, Phillips BR, Sorkness CA, Lemanske RF, Szefler SJ, Taussig L, Bacharier LB, Morgan W. Forced expiratory flow between 25% and 75% of vital capacity and FEV1/forced vital capacity ratio in relation to clinical and physiological parameters in asthmatic children with normal FEV1 values. J Allergy Clin Immunol. 2010 Sep; 126(3):527-34.e1-8.