forced vital capacity ( fvc ) , forced expiratory volume in 1s ( fev1 ) , fev1/fvc , peak expiratory flow ( pef ) and flow at 50 and 25 % of fvc ( v50 and v25 ) were compared with the predictions made from the equations of schoenberg , beck and bouhuys , describing healthy people in connecticut , usa .
C0009778
connecticut
C0041703
usa