9Tilton D. How to fine-tune your PICC care[J]. RN, 2006, 69 (9) : 30-35.
10Tamburro RF,Conncr DT,Proctor KE,et al. The effect of a medi- astinal mass on the initial positioning of a peripherally inserted cen- tral venous catheter[J]. J Infus Nurs, 2003,26 (2) : 92- 96.