TI - QUestions and answers PT - JOUR DP - 1969 TA - JAMA pages = {563-564}, VI - 210 IP - 3 AID - 10.1001/jama.1969.03160290115052 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160290115052 SO - JAMA October 20, 1969 210(3):563