1. Roughly a page on how the autonomic nervousness system relates to ACE 2 2. Add another source for background

1. Roughly a page on how the autonomic nervousness system relates to ACE 2
2. Add another source for background information
3. For figures 1-4 in the paper the essay is written on go into a bit of detail on each one
Link to paper: https://www.ajog.org/article/S0002-9378(20)30343-4/fulltext