TI  - NIght calls
PT  - JOUR
DP  - 1999
TA  - JAMA
pages = {1360},
VI  - 281
IP  - 15
AID  - 10.1001/jama.281.15.1360 [doi]
4100  - http://dx.doi.org/10.1001/jama.281.15.1360
SO  - JAMA April 21, 1999 281(15):1360