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[104] E. Roth, Deutsche Vierteljahresschr. f. offentl. Gesundheitspfl., 1890, 22:238

[105] S. W. North, London Practitioner, 1889, 43:393.

[106] Sedgwick and Chapin, Boston Med. & Surg. Journ., 1893, 129:485.

[107] Dabney, Phila. Med. News, 1893, 63:630.

[108] Welphy, London Lancet, 1894, 2:1085.

[109] Brit. Med. Journ., 1894, 1:815.

[110] Mass. Bd. Health Rept., 1894, p. 765.

[111] Turner, London Practitioner, 1892, 49:141; Munro, Brit. Med. Journ., 1894, 2:829.

[112] Hankin, Brit. Med. Journ., 1894, 2:613.