Vascular Access Echo 6-Book Set by Aslead Corporation Thank you for viewing. I attended a seminar around 2020 and am selling these books as I no longer use them. They are very easy-to-understand reference books with photos and diagrams. There are some notes and writing in the diagrams, but please take a look at the photos and consider purchasing only if you are not concerned about this. These are not ordinary books, so the pages that stick out slightly are a bit creased. Please also confirm this. #VascularAccess #UltrasoundExamination #Echo #UltrasoundTechnician #ClinicalEngineer #ShuntEcho #Aslead #Dialysis #ReferenceBook