Who has priority over development of EUS and 2-D TEE systems ?

Who has priority over reporting EUS and 2-D TEE examination? 

Who has priority over filling stomach with water method during EUS examination?  This method is the most important discovery in EUS examination. 

Time line of development of EUS and TEE

References of time line - - - - Click here  

Please read "Time line of development of endoscopic ultrasound and transesophageal echocardiography".    Click here

Please read this site ("History of EUS"     Click here)

Please read this site ("History of TEE"      Click here)

Please read this site ("History of Echocardiography"     Click here)