Dr. Patrick Whelan, MD, PhD, formerly of Mass General Hospital and now UCLA, submitted the [Document] via [beta.regulations.gov, about the mRNA vaccines to the FDA on December 8; the actual letter is accessed through download:
"I am a pediatric specialist caring for children with the multisystem inflammatory syndrome (MIS-C). I am concerned about the possibility that the new vaccines aimed at creating immunity against the SARS-CoV-2 spike protein (including the mRNA vaccines of Moderna and Pfizer) have the potential to cause microvascular injury to the brain, heart, liver, and kidneys in a way that does not currently appear to be assessed in safety trials of these potential drugs.” [emphasis added]
That was just the first paragraph.
It gets worse.