2015-05-26 16:59
616
2
2014
7-9
30 5.7 10.4 12.9 7 9.2 13.8 6.7 16 7.3
6 30 6
1961
1
2
3
4
3-6 M =4.4 36 24 48
38.2 12.7 17 15.7
3-15 3.6
1963 2000 6 …… 30 American Medical Association , 2000
XXX