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Crook ED, Clark BL, Bradford ST, Golden K, Calvin R, Taylor HA Jr, Flack JM.Crook ED, et al. Among authors: calvin r.Am J Med Sci. 2003 Jun;325(6):307-14. doi: 10.1097/00000441-200306000-00002.Am J Med Sci. 2003.PMID: 12811227Review.
Hill M, Calvin RL, Bangura T, Moore AN, Maston K, Azoro C, Brown B, Boyd C.Hill M, et al. Among authors: calvin rl.J Natl Black Nurses Assoc. 2001 Dec;12(2):53-8.J Natl Black Nurses Assoc. 2001.PMID: 11902022Review.
Fletcher A, Williams PR, Beacham T, Elliott RW, Northington L, Calvin R, Hill M, Haynes A, Winters K, Davis S.Fletcher A, et al. Among authors: calvin r.J Cult Divers. 2003 Winter;10(4):128-33.J Cult Divers. 2003.PMID: 15000056Review.
Roopa G, Madhusudhan MC, Sunil KCR, Lisa N, Calvin R, Poornima R, Zeinab N, Kini KR, Prakash HS, Geetha N.Roopa G, et al. Among authors: calvin r.J Genet Eng Biotechnol. 2015 Dec;13(2):119-127. doi: 10.1016/j.jgeb.2015.09.002. Epub 2015 Oct 1.J Genet Eng Biotechnol. 2015.PMID: 30647575Free PMC article.