Suzuki R, Irisawa A, Bhutani MS, Hikichi T, Takagi T, Shibukawa G, Sato A, Sato M, Ikeda T, Watanabe K, Nakamura J, Annangi S, Tasaki K, Obara K, Ohira H. An automated spring-loaded needle for endoscopic ultrasound-guided abdominal paracentesis in cancer patients. World J Gastrointest Endosc 2014; 6(2): 55-59 [PMID: 24567793 DOI: 10.4253/wjge.v6.i2.55]