Medical Notes are relatively short documents linking complex objects - diseases, disorders, body parts, prognosis. They are easily parsed and the structures built.
A presentation gives more details:
Medical Note
For notes on the design process for automatic parsing and structure building of medically related documents, see Medical Design Notes
A small example of structure:

10000000101000001010000010001000111100001000000010000000111111111010101011000000110011001111000011000000110011001100000011111111
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