FYI
https://emergencycare.nhmrc.gov.au/gateway/forum/files/Chest%20Comp%20only%20OCT%202010%20JAMA.pdf
Keeping in mind , of course, this railway probably not that relevant anyway, despite the mention in the ipo announcement.
Would have thought some mention of the above , might have been in order, from the company[couldn't resist the pun].
Take note of the date the article was written.
cheers