Funding for this research was provided by:
Finnish Women Dentists' Association
Suomen Hammaslääkäriseura Apollonia
Sigrid Juséliuksen Säätiö
Finnish Foundation for Pediatric Research
Terveyden Tutkimuksen Toimikunta
Helsinki University Hospital Research Funds
Received: 4 April 2018
Accepted: 5 December 2018
First Online: 29 December 2018
Ethics approval and consent to participate
: All procedures performed were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The Research Ethic Board of Helsinki University Hospital, Helsinki, Finland had approved the study (12/18/2014).Informed consent was obtained from all individual participants included in the study.
: There are no details on individuals reported within the manuscript nor images that would require a consent for publication.
: The authors declare that they have no competing interests.Heidi Arponen, Adel Bachour, Leif Bäck, Helena Valta, Antti Mäkitie, Janna Waltimo-Sirén, and Outi Mäkitie declare that they have no conflict of interest.
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