Add procedures mappings for MIMIC-IV v2.0 - SSSOM format

[a-chahin]

This pull request adds two mapping csv files for procedures concepts from the d_items and procedureevents tables in MIMIC-IV v2.0. The first file procedureevents_to_snomed.csv contains itemid to SNOMED-CT mappings. The second file procedureevents_to_omop.csv contains itemid to OMOP mappings.

Both files use the simple standard for sharing ontology mappings SSSOM format @sssom

[tompollard]

Looks good, thanks @a-chahin!

• I notice that you have left some of the author_id fields empty for the mappings. I assume this is because we inherited those mappings?
• The documentation at https://mapping-commons.github.io/sssom/author_id/ suggests that author_id is "Recommended to be a (pipe-separated) list of ORCIDs". I think you are currently using commas to separate lists. Should we swap out the commas for |?
• Minor thing, but both files are missing a newline character at the end. This can lead to some tools to ignore the final line. If you are editing the files, we might want to add a newline (just hit return at the end of the final line of each file).

@matentzn hope you don't mind me tagging you here! This file is a mapping for MIMIC-IV concepts. No pressure, but we would appreciate your thoughts on whether anything more should be done to conform to @sssom format.

[a-chahin]

Looks good, thanks @a-chahin!

• I notice that you have left some of the author_id fields empty for the mappings. I assume this is because we inherited those mappings?
• The documentation at https://mapping-commons.github.io/sssom/author_id/ suggests that author_id is "Recommended to be a (pipe-separated) list of ORCIDs". I think you are currently using commas to separate lists. Should we swap out the commas for |?
• Minor thing, but both files are missing a newline character at the end. This can lead to some tools to ignore the final line. If you are editing the files, we might want to add a newline (just hit return at the end of the final line of each file).

@matentzn hope you don't mind me tagging you here! This file is a mapping for MIMIC-IV concepts. No pressure, but we would appreciate your thoughts on whether anything more should be done to conform to @sssom format.

Thank you @tompollard!

• You are correct. The author_id field is empty for concepts that were mapped by the OMOP folks.
• Thank you for bringing this to my attention. I'm sorry I missed it.
• I will fix the ORCIDs and add a newline character at the end and update the csv files.

[tompollard]

I have (1) added the missing newline and (2) changed the orcid list separator from , to |.