共 71 条
[1]
[Anonymous], 1999, DOING QUALITATIVE RE
[2]
[Anonymous], 2014, Propensity Score Analysis: Statistical Methods and Applications
[3]
[Anonymous], 2008, Cancer facts and figures
[4]
[Anonymous], 1999, DOING QUAL RES
[8]
Beyer H, 1998, DESIGN DEFINING CUST