TI - ABsolute values in percussion PT - JOUR DP - 1909 TA - Journal of the American Medical Association pages = {1429-1430}, VI - LII IP - 18 AID - 10.1001/jama.1909.02540440057009 [doi] 4100 - http://dx.doi.org/10.1001/jama.1909.02540440057009 SO - Journal of the American Medical Association May 1, 1909 LII(18):1429