Guidewire caliber is not important when controlled by high-caliber operators

"All the tools, techniques, and technology in the world are nothing without the head, heart, and hands to use them wisely, kindly, and mindfully."–Rasheed OgunlaruTherapeutic ERCP requires cannulation and deep guidewire access of the desired biliary duct, pancreatic duct, or both. Although cannulation is more an art than a science,1 it is instructive to consider the important general principles and the growing accumulation of data that pertain to successful and safe strategies.

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