2Merrer J,De Jong he B,Golliot F,et al.complications of femoral and subclavian venous catheterization in critically ill patients:a randomized controlld trial[J].JAMA,2001,286(6):700-707.
3McGee D c,Gonld M k.preventing complications of central venous catheterization[J].N Engl J med,2003,348(26):2684-2686.