Changes of the Internal Jugular Vein by Ultrasonography in Relation to Trendelenburg Position. - Quiroga-Garza, Alejandro; Hernández-Garate, Yenitzeh AK.; de Luna Vega, Raul A.; Fernandez-Rodarte, Bernardo Alfonso; Pinales-Razo, Ricardo; Casas-Murillo, Claudio A.; Elizondo-Riojas, Guillermo; Salinas-Alvarez, Yolanda; Elizondo-Omaña, Rodrigo E.; Guzman-Lopez, Santos (Journal of the American College of Surgeons, 2021)