Gastroenterology Specialist Practice Logo

This is what Westmead Gastroenterology was looking for in their logo design

I need a logo for my specialist medical practice.
I am a gastroenterologist specialising also in liver disease.
My Practice is called Westmead Gastroenterology, named after the hospital I work at (Westmead, Sydney) and the area.
Up until now I have been using a set of blue and black lines as a quasi logo (see my website: drdavidvdp.com.au), and I would like to either incorporate these in some way into the logo, or at least use the colours in some way for continuity.
The logo could incorporate a stylised liver or endoscope. (not mandatory)
It will be used in the top corner of all my letters, on my website and ideally on my business cards so needs to be scaleable.
I'd like it in colour.
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