共 16 条
[11]
*NAT CTR HLTH STAT, NHAMCS SCOP SAMPL DE
[12]
*NAT CTR HLTH STAT, US ULT CLUST MOD NAM
[13]
National Center for Health Statistics Centers for Disease Control and Prevention, NHAMCS EST PROC
[15]
SHI L, 2004, DELIVERING HLTH CARE, P203
[16]
*US CENS BUR, PROJ DAT CALC 65 74