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Hill J, Murray L, Leidecker V, Sharp H.Hill J, et al. Among authors: sharp h.Philos Trans R Soc Lond B Biol Sci. 2008 Aug 12;363(1503):2529-41. doi: 10.1098/rstb.2008.0036.Philos Trans R Soc Lond B Biol Sci. 2008.PMID: 18450562Free PMC article.
Wright N, Hill J, Pickles A, Sharp H.Wright N, et al. Among authors: sharp h.PLoS One. 2015 Dec 8;10(12):e0144131. doi: 10.1371/journal.pone.0144131. eCollection 2015.PLoS One. 2015.PMID: 26645963Free PMC article.