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Bille J, Roberts GD, Washington JA 2nd.Bille J, et al. Among authors: roberts gd.Eur J Clin Microbiol. 1983 Feb;2(1):22-5. doi: 10.1007/BF02019918.Eur J Clin Microbiol. 1983.PMID: 6341046
Hall L, Wohlfiel S, Roberts GD.Hall L, et al. Among authors: roberts gd.J Clin Microbiol. 2003 Nov;41(11):5099-102. doi: 10.1128/JCM.41.11.5099-5102.2003.J Clin Microbiol. 2003.PMID: 14605145Free PMC article.
Wang HS, Zeimis RT, Roberts GD.Wang HS, et al. Among authors: roberts gd.J Clin Microbiol. 1977 Nov;6(5):445-9. doi: 10.1128/jcm.6.5.445-449.1977.J Clin Microbiol. 1977.PMID: 336639Free PMC article.
Roberts GD, Washington JA 2nd.Roberts GD, et al.J Clin Microbiol. 1975 Mar;1(3):309-10. doi: 10.1128/jcm.1.3.309-310.1975.J Clin Microbiol. 1975.PMID: 1176606Free PMC article.