Ramírez-Ramírez Miguel Angel, Zamorano-Orozco Yolanda
Endoscopic Ultrasound Department. Instituto Mexicano del Seguro Social "Carlos Macgregor," México City, México.
Gastrointest Endosc. 2020 Apr;91(4):948-950. doi: 10.1016/j.gie.2019.11.007. Epub 2019 Nov 13.