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Keaschuk RA, Newton AS, Kaczmarek TG, Ball GD.Keaschuk RA, et al.Cases J. 2009 Jun 3;2:6677. doi: 10.1186/1757-1626-2-6677.Cases J. 2009.PMID: 19829842Free PMC article.
Ambler KA, Hagedorn DW, Ball GD.Ambler KA, et al.BMC Health Serv Res. 2010 Nov 1;10:302. doi: 10.1186/1472-6963-10-302.BMC Health Serv Res. 2010.PMID: 21040585Free PMC article.
Johnson ST, Newton AS, Chopra M, Buckingham J, Huang TT, Franks PW, Jetha MM, Ball GD.Johnson ST, et al.BMC Pediatr. 2010 Dec 23;10:97. doi: 10.1186/1471-2431-10-97.BMC Pediatr. 2010.PMID: 21182791Free PMC article.Review.