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I'm noticing that UUIDs in a patient record are being parsed as prescriptions eg:

54A14C20-50FB-11EB-AE9C-9999999999C

Results in:

_content:C-9999999999C
_end:35
_id:44
_set:Output
_start:22
_type:Prescription
dose:-9999999999C
dose-multiple:1
dose-unit:C
dose-value:-9.999999999E9
drug:C
drug-type:GATE_gazetteer
route:unknown
status:continuing
tense:present

or

C-12345E678901C

results in:

_content:C-12345E678901C
_end:15
_id:20
_set:Output
_start:0
_type:Prescription
dose:-12345E678901C
dose-multiple:1
dose-unit:C
dose-value:-Infinity
drug:C
drug-type:GATE_gazetteer
route:unknown
status:continuing
tense:present

I don't know enough about GATE or this plugin to understand where the responsibility lies for sanity checking the output (our application assumes dose-value is decimal so chokes on "-Infinity" or exponential notation). "-Infinity" does seem wrong for a field defined as a double that would never be negative.