共 78 条
[4]
Beck D. E., 1998, FUNDAMENTALS ANORECT
[6]
BORRIE MJ, 1992, CAN MED ASSOC J, V147, P322
[8]
Cheetham M., 2003, COCHRANE DB SYST REV
[9]
Observational Versus Experimental Studies: What's the Evidence for a Hierarchy?
[J].
NeuroRX,
2004, 1 (3)
:341-347