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Nicas M, Nazaroff WW, Hubbard A (2005). "Toward understanding the risk of secondary airborne infection: emission of respirable pathogens". J Occup Environ Hyg2 (3): 143–54. doi:10.1080/15459620590918466. பப்மெட்:15764538.
name=Griffith_1996>Griffith D, Kerr C (1996). "Tuberculosis: disease of the past, disease of the present". J Perianesth Nurs11 (4): 240–5. doi:10.1016/S1089-9472(96)80023-2. பப்மெட்:8964016.
Snow RW, Guerra CA, Noor AM, Myint HY, Hay SI (2005). "The global distribution of clinical episodes of Plasmodium falciparum malaria". Nature434 (7030): 214–7. doi:10.1038/nature03342. பப்மெட்:15759000.