Chambers, Samuel Norton http://orcid.org/0000-0002-4734-2855
Article History
First Online: 3 June 2019
Compliance with ethical standards
:
: As this study was not funded and data was openly available, I do not have any potential conflicts of interest to disclose.
: No human (or animal) participants were involved and the mortality records used in analysis were collected by a third party prior to this research.
: No consent was or is required for this study and the paper.