If you need to have the same note in multiple locations, consider having the note itself in a fairly flat hierarchy (say, 2 hierarchies deep, e.g.

ref.angina

), and then use note references (https://wiki.dendron.so/notes/f1af56bb-db27-47ae-8406-61a98de6c78c/) in

cardiac-disease.angina

and

pain.thoracic.angina

like so:

![[ref.angina]]