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Publikováno v:
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde. 91(11)
Peak expiratory flow (PEF) is a useful measure of pulmonary health status and is frequently utilised in asthma management. Reduction in PEF is usually indicative of onset of asthma symptoms. However, use can be made of PEF values only if normal value