TI - Roentgen-diagnostics: Progress volume i PT - JOUR DP - 1959 TA - Journal of the American Medical Association pages = {541}, VI - 169 IP - 5 AID - 10.1001/jama.1959.03000220121030 [doi] 4100 - http://dx.doi.org/10.1001/jama.1959.03000220121030 SO - Journal of the American Medical Association January 31, 1959 169(5):541