1. Accardi: Boll. Ocul. 10, 938 (1931).
2. Adams: Canad. Publ. Health 28, 388 (1937).
3. Amies: (A) Lancet 1988 I, 1015. (B) Brit. J. Exper. Path. 15, 314 (1934).
4. Auricchio: Pediatria 82, 1305 (1924).
5. Balogh: Yerh. 9. Internat. Kongr. Dermat. 2, 232 (1936).