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Boot AM, Nauta J, Hokken-Koelega AC, Pols HA, de Ridder MA, de Muinck Keizer-Schrama SM.Boot AM, et al.Arch Dis Child. 1995 Jun;72(6):502-6. doi: 10.1136/adc.72.6.502.Arch Dis Child. 1995.PMID: 7618934Free PMC article.