TI - STandardization needed. PT - JOUR DP - 1999 TA - JAMA pages = {10L}, VI - 282 IP - 1 AID - 10.1001/jama.282.1.10 [doi] 4100 - http://dx.doi.org/10.1001/jama.282.1.10 SO - JAMA July 7, 1999 282(1):10L