TI - BElgium PT - JOUR DP - 1929 TA - Journal of the American Medical Association pages = {488-489}, VI - 92 IP - 6 AID - 10.1001/jama.1929.02700320058024 [doi] 4100 - http://dx.doi.org/10.1001/jama.1929.02700320058024 SO - Journal of the American Medical Association February 9, 1929 92(6):488