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Felix A, Pitt RM.Felix A, et al. Among authors: pitt rm.J Hyg (Lond). 1951 Mar;49(1):92-110. doi: 10.1017/s0022172400015394.J Hyg (Lond). 1951.PMID: 20475842Free PMC article.No abstract available.
Felix A, Pitt RM.Felix A, et al. Among authors: pitt rm.J Hyg (Lond). 1935 Aug;35(3):428-36. doi: 10.1017/s0022172400032459.J Hyg (Lond). 1935.PMID: 20475294Free PMC article.No abstract available.