[874] Grünberger, loc. cit.
[875] Nagel, Deutsch. med. Wochenschr., 1903.
[876] Zinn, “Therap. der Gegenwart.,” 1903.
[877] Warburg, Münch. med. Wochenschr., 1904.
[878] Nagel, loc. cit.
[879] Hynek, Sbornik Kliniky, v.
[880] Stockman, Brit. Med. Journ., 1904.
[881] Boycott and Haldane, Journ. of Hyg., ix.
[882] Adams, Arch. of Pediat., 1901.
[883] Philips, Lancet, 1906.