[11]. Süsswein: Wien. klin. Wchnschr., 1901, xiv, 1149.
[12]. Liebscher: Prag. med. Wchnschr., 1903, xxviii, 85.
[13]. Jehle: Ztschr. f. Heilk., 1901, xx, n. s. 2, Int. Med.
[14]. Davis: Jour. Infect. Dis., 1906, iii, 1.
[15]. Lord: Boston Med. Sur. Jour., 1905, clii, 537, 574.
[16]. Boggs: Am. Jour. Med. Sc., 1905, cxxx, 902.
[17]. Wollstein: Am. Jour. Dis. Child., 1911, i, 42.
[18]. Rosenthal: Comp. rend. Soc. Biol., 1903, lv, 1500.
[19]. Wollstein: Jour. Exper. Med., 1915, xxii, 445.
[20]. Med. Sup. October 1, 1918 also Jour. Am. Med. Assn., 1918, lxxi, 1573.