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Serafin IL, Aaskov JG.Serafin IL, et al. Among authors: aaskov jg.Arch Virol. 2001 Dec;146(12):2469-79. doi: 10.1007/s007050170017.Arch Virol. 2001.PMID: 11811694
Aaskov JG, Williams L, Fletcher J, Hay R.Aaskov JG, et al.Am J Trop Med Hyg. 1988 Nov;39(5):511-8. doi: 10.4269/ajtmh.1988.39.511.Am J Trop Med Hyg. 1988.PMID: 2973756