There are many sources to back up the doctors who wrote the letter to the FAA recommending more tests than just ECG/EKG. Everything I’ve read supports their point.
https://scholar.google.com/scholar?hl=en&as_sdt=0,35&q=d-dimer+early+indicator
Just stop while you are ahead. The majority of those articles regarding cardiac diagnosis are at the latest 2011 -- when we actually developed specific markers to cardiac disease
Unbelievably the two most recent articles validate how I have used D-Dimer -- as a prognostic indicator, not diagnosis modality, for CoVID. You do realize, you validate everything I have said with your posts.
Thank you for demonstrating my expertise with your own words -- I urge you for your sake, read your sources before mindlessly posting. It is what people capable of critical thinking do.