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McGaw D, Harper R.McGaw D, et al. Among authors: harper r.Intern Med J. 2001 Jan-Feb;31(1):42-7. doi: 10.1046/j.1445-5994.2001.00004.x.Intern Med J. 2001.PMID: 11478356Review.
Vogrin S, Harper R, Paratz E, MacIsaac A, Burchell J, Smith B, Scott A, Yong J, Sundararajan V.Vogrin S, et al. Among authors: harper r.Ann Intern Med. 2017 Jun 6;166(11):783-791. doi: 10.7326/M16-2420. Epub 2017 May 2.Ann Intern Med. 2017.PMID: 28462421
Ihdayhid AR, Yong A, Harper R, Rankin J, Wong C, Brown AJ, Leung M, Ko B.Ihdayhid AR, et al. Among authors: harper r.Heart Lung Circ. 2018 Apr;27(4):406-419. doi: 10.1016/j.hlc.2017.09.017. Epub 2017 Oct 20.Heart Lung Circ. 2018.PMID: 29191506Review.