Chudal, Roshan http://orcid.org/0000-0002-8364-9432
Tiiri, Elina http://orcid.org/0000-0003-0728-0810
Brunstein Klomek, Anat
Ong, Say How
Fossum, Sturla
Kaneko, Hitoshi
Kolaitis, Gerasimos
Lesinskiene, Sigita
Li, Liping
Huong, Mai Nguyen
Praharaj, Samir Kumar
Sillanmäki, Lauri
Slobodskaya, Helena R.
Srabstein, Jorge C.
Wiguna, Tjhin
Zamani, Zahra
Sourander, Andre http://orcid.org/0000-0003-0361-7244
Akhondzadeh, Shahin
Fung, Daniel S. S.
Giannakopoulos, George
Grimland, Meytal
Hamada, Shoko
Heinonen, Emmi
Ismail, Raden Irawati
Jain, Praveen A.
Kamath, Avinash G.
Khong, Jerrine Z. N.
Kyrrestad, Henriette
Lempinen, Lotta
Limawan, Albert Prabowo
Mohseni, Maryam
Najafi, Ali
Ngoc, Minh Thanh
Ogura, Masayoshi
Peng, Zhekuan
Rippinen, Tatiana O.
Sekartini, Rini
Semenova, Nadezhda B.
Skokauskas, Norbert
Tan, Yi Ren
Triantafyllou, Kalliopi
Zaravinos-Tsakos, Phevous
,
Funding for this research was provided by:
Academy of Finland (320162, 308552)
Russian Scientific Foundation (16-18-00003)
Suomen Aivosäätiö
Varsinais-Suomen Sairaanhoitopiiri
University of Turku (UTU) including Turku University Central Hospital
Article History
Received: 28 April 2020
Accepted: 7 April 2021
First Online: 21 April 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: The researchers in each country obtained ethical approval for the survey, contacted the schools and obtained permission to conduct the study. Participation was voluntary and anonymity was guaranteed during data collection. Consent was obtained from the parents or school authorities, according to each country’s policies. The study was therefore performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Consent was obtained from the parents or school authorities, according to each country’s policies.
: All the authors have approved the manuscript.
: Not applicable.
: SAS 9.4 for Windows (SAS Institute Inc. Cary, NC, USA, 2012).