Xin, Guanyu
Ruohoalho, Johanna http://orcid.org/0000-0002-6773-0273
Bäck, Leif http://orcid.org/0000-0001-8383-7671
Aro, Katri http://orcid.org/0000-0001-8103-5237
Tapiovaara, Laura http://orcid.org/0000-0002-9747-6624
Funding for this research was provided by:
Helsingin ja Uudenmaan Sairaanhoitopiiri
Article History
Received: 8 March 2019
Accepted: 8 May 2019
First Online: 15 May 2019
Compliance with ethical standards
:
: No potential conflict of interest was reported by the authors.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was not required for this type of retrospective study.