Graphic element for Dermatology Clinic logo

This is what no words - graphic component to add to existing word logos was looking for in their logo design

We are a dermatology practice called
"Dermatology Clinics Australia"
that has 3 sub-brands :
"Eczema Clinics Australia"
"Psoriasis Clinics Australia"
"Vitiligo Clinics Australia"
Please see attached images for current logos for these practices.
We are seeking a graphic element to add to each of these logos that will tie them all together.
I have attached an example from Sullivan Nichilaides Pathology, where they use the same graphical element for their pathology and skin doctors brands. this is similar to what we are looking to do (however they have used a double helix for pathology and we would like to do something different)
We are open to different styles of graphical elements, but like the idea of something healthcare related as an image or a crest that can be used internationally. we do not like the lotus/flower/hand/stylised face etc that are used by beauty clinics. we would like to differentiate as the leading global service for dermatology… Read more