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Roberts PR, Allen S, Smith DC, Urban JF, Euler DE, Dahl RW, Kallok MJ, Morgan JM.Roberts PR, et al. Among authors: dahl rw.J Interv Card Electrophysiol. 1999 Oct;3(3):231-8. doi: 10.1023/a:1009895623802.J Interv Card Electrophysiol. 1999.PMID: 10490479