Help with capturing some statements in PXF

[tudorgroza]

• Patient had: Skeletal muscle biopsy (SCTID: 430213002), which led to findings such as: Ragged red fibers (HP:0003200)
• Patient had: Heart muscle biopsy, which led to findings such as: Ragged red fibers (HP:0003200) | Myocardial steatosis (HP:0006693)

Some more complicated ones:

• Age of development regression
• EEG findings (e.g., abnormal) at epilepsy onset
• EEG findings (e.g., abnormal) at epilepsy evolution
• Feeding assistance -> Improvement over time.

[cmungall]

Here the the biopsy would serve as the evidence, in this spot: https://github.com/phenopackets/phenopacket-reference-implementation/blob/master/src/test/resources/person-variant-phenotype-example1.yaml#L20-L21

The relevant branch of SNOMED would go where we also put ECO classes.

More later..