An evaluation of the vitalograph pulmonary monitor

Haydu, 1976, Pulmonary monitor for assessment of airways obstruction, Lancet, 2, 1225, 10.1016/S0140-6736(76)91147-8 Lockhart, 1960, Practical experience with the peak flow meter, Br. med. J., 1, 37, 10.1136/bmj.1.5165.37 McKerrow, 1958, Respiratory function the day in cotton workers: a study in byssinosis, Br. J. indust. Med., 15, 75 Perks, 1979, An evaluation of the mini-Wright peak flow meter, Thorax, 34, 79, 10.1136/thx.34.1.79 Shephard, 1962, Some observations on peak expiratory flow, Thorax, 17, 39, 10.1136/thx.17.1.39 Wright, 1959, Maximum forced expiratory flow as a measure of ventilatory capacity, Br. med. J., 2, 1041, 10.1136/bmj.2.5159.1041