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Dzingina M, Stegenga H, Heath M, Jones D, Rogers G, Kleijnen J, Wolff R, Armstrong N, Howdle PD; Guideline Development Group.Dzingina M, et al. Among authors: armstrong n.BMJ. 2011 Dec 14;343:d7595. doi: 10.1136/bmj.d7595.BMJ. 2011.PMID: 22171344No abstract available.
Dzingina M, Stegenga H, Heath M, Jones D, Rogers G, Kleijnen J, Wolff R, Armstrong N, Howdle PD.Dzingina M, et al. Among authors: armstrong n.Praxis (Bern 1994). 2012 Mar 28;101(7):473-6. doi: 10.1024/1661-8157/a000892.Praxis (Bern 1994). 2012.PMID: 22454309German.No abstract available.
Westwood M, Lang S, Armstrong N, van Turenhout S, Cubiella J, Stirk L, Ramos IC, Luyendijk M, Zaim R, Kleijnen J, Fraser CG.Westwood M, et al. Among authors: armstrong n.BMC Med. 2017 Oct 24;15(1):189. doi: 10.1186/s12916-017-0944-z.BMC Med. 2017.PMID: 29061126Free PMC article.Review.