TI - QUestions and answers PT - JOUR DP - 1979 TA - JAMA pages = {2800-2801}, VI - 242 IP - 25 AID - 10.1001/jama.1979.03300250056034 [doi] 4100 - http://dx.doi.org/10.1001/jama.1979.03300250056034 SO - JAMA December 21, 1979 242(25):2800