Rotatable Sphincterotome

Ua haujlwm raug, nyab xeeb thiab ua haujlwm tau zoo
Yooj yim intubation; Hla nqaim
Ua tau raws li cov kev xav tau
Txo qhov kev pheej hmoo ntawm kev txiav ntau dhau; tiv thaiv endoscopic channel
Nthuav hlau, riam tsis-stick