References
- Fries J. H., Zizmoh J. Jour. Pediatrics. 1940; 16: 69
- Fries J. H. Amer. Jour. Diseases of Children 1937; 54: 1239
- Schloss O. M. Amer. Jour. Diseases of Children 1912; 3: 41
- Hollander E. Jour. Med. Sci. 1927; 174: 495
- Vaughan W. T. South. Med. Jour. 1928; 21: 894
- Beecher W. L. Clin. Med. & Surg. 1929; 36: 568
- Spangler R. H. Jour. Lab. & Clin. Med. 1927; 13: 41