Phitphibunwong, Phuttasini, Borwon Wittayachamnankul, and Boriboon Chenthanakit. 2019. “Early Goal Directed Therapy in Severe Sepsis and Septic Shock Patient: Can CVP Measurement Replaced by IVC Ultrasound?”. Thai Journal of Emergency Medicine 1 (2). Bangkok, Thailand:15-30. https://he02.tci-thaijo.org/index.php/TJEM/article/view/247242.