Distribution of forced vital capacity and forced expiratory volume in one second in children 6 to 11 years of age.
Dockery DW, Berkey CS, Ware JH, Speizer FE, Ferris BG. Distribution of forced vital capacity and forced expiratory volume in one second in children 6 to 11 years of age. Am Rev Respir Dis. 1983 Sep; 128(3):405-12.