Haapasalmi, Saila
Piili, Reetta P.
Metsänoja, Riina
Kellokumpu-Lehtinen, Pirkko-Liisa I.
Lehto, Juho T.
Article History
Received: 21 February 2021
Accepted: 11 June 2021
First Online: 26 July 2021
Declarations
:
: The study was approved by the Regional Ethics Committee of Tampere University Hospital, Finland (R15101) and participation was voluntary and anonymous. A cover letter including full information about the study and contact details of the authors for any additional questions were mailed together with the questionnaires. Answering the questionnaire and sending it to the authors was regarded as a written informed consent to participate to the study. This was approved by the ethics committee. The study has been conducted according to Declaration of Helsinki. Data has been collected and stored according to the national and EU regulations.
: Not applicable.
: Authors declare that they have no competing interests.