In the revised manuscript, this information was added. “This database is available to outside researchers after obtaining approval from the CDC and KP. Information regarding access to this database is at: http://www.cdc.gov/vaccinesafety/ensuringsafety/monitoring/vsd/accessing-data.html.”
On page 11 line 4 you say levels of Hg in the environment and in humans are increasing but your reference #26 doesn't speak to that point.