The 22G Trident Needle Combined With Different Aspiration Techniques for Endoscopic Ultrasound-guided Fine-needle Biopsy
Conditions
Interventions
- PROCEDURE: ABC suction sequence
- PROCEDURE: ACB suction sequence
- PROCEDURE: BAC suction sequence
- PROCEDURE: BCA suction sequence
- PROCEDURE: CAB suction sequence
- PROCEDURE: CBA suction sequence
Sponsor
Changhai Hospital