Funding for this research was provided by:
Gunner and Ingmar Jungner Foundation for Laboratory Medicine (3)
Kings College London (1)
Karolinska Institutet (2)
Received: 12 March 2019
Accepted: 9 July 2019
First Online: 23 July 2019
Ethics approval and consent to participate
: The study was approved by the ethics board of Karolinska Institutet who waived the need for consent and conformed to the declaration of Helsinki.
: The authors declare that they have no competing interests.