Balasubramanian, SRavikumar, N RChakkarapani, ElavazhaganShivbalan, S O2002-01-242009-05-272002-01-242009-05-272002-01-24Balasubramanian S, Ravikumar NR, Chakkarapani E, Shivbalan SO. Peak expiratory flow rate in children--a ready reckoner. Indian Pediatrics. 2002 Jan; 39(1): 104-6http://imsear.searo.who.int/handle/123456789/15912engAsthma --diagnosisBody HeightChildChild, PreschoolHumansPeak Expiratory Flow RatePeak expiratory flow rate in children--a ready reckoner.Letter