H. Zinsser, J.G. Hopkins and M. McBurney, 'Studies on Treponema Pallidum and Syphilis,' Journal of Experimental Medicine 23 (3) (1916), pp. 323-352 and 24 (5) (1916), pp. 561-581.
H. Zinsser, J.G. Hopkins and M. McBurney, 'Studies on Treponema Pallidum and Syphilis,' Journal of Experimental Medicine 23 (3) (1916), pp. 323-352 and 24 (5) (1916), pp. 561-581.