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Sivakumar P, Douiri A, West A, Rao D, Warwick G, Chen T, Ahmed L.Sivakumar P, et al.BMJ Open. 2016 Oct 18;6(10):e012795. doi: 10.1136/bmjopen-2016-012795.BMJ Open. 2016.PMID: 27798020Free PMC article.Clinical Trial.
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Sivakumar P, Saigal A, Ahmed L.Sivakumar P, et al.BMJ Support Palliat Care. 2020 Mar;10(1):45-54. doi: 10.1136/bmjspcare-2018-001610. Epub 2019 Jun 26.BMJ Support Palliat Care. 2020.PMID: 31243020
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