Financial & competing interests disclosure
The work of María Dolores Braquehais and J Antoni Ramos-Quiroga was partly supported by a grant from the Department of Health of the Government of Catalonia (Generalitat de Catalonia), Spain. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.