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Vogel M, Anderson LJ, Holden S, Deanfield JE, Pennell DJ, Walker JM.Vogel M, et al. Among authors: walker jm.Eur Heart J. 2003 Jan;24(1):113-9. doi: 10.1016/s0195-668x(02)00381-0.Eur Heart J. 2003.PMID: 12559943
Cooper JP, Oliver RM, Currie P, Walker JM, Swanton RH.Cooper JP, et al. Among authors: walker jm.Br Heart J. 1995 Apr;73(4):351-4. doi: 10.1136/hrt.73.4.351.Br Heart J. 1995.PMID: 7756068Free PMC article.