1. Rehfusr:
2. Lyon, B. B. Vincent: Non-Surgical Drainage of the Gall Tract, Lea & Febimer. 1923.
3. Jutte:New York Med. J., 95:543, 1912.
4. Einhorn:Mel. Record. p. 98, 77, Jan. 15, 1910;Med. Record, p. 92, 78, 1910;Interstate Med. J., Vol. xvii. No. 10, 1910.
5. Bondi, S.:Arch. f. Vertlaunnask, p. 692, 1913.