<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: united states: the completely de-identified national hospital discharge survey (nhds) data in the united states is publically available at: http://www.cdc.gov/nchs/nhds.htm canada: canadian hospitalization records data cannot be released unless the request is accompanied by an invitation for collaboration with staff at the public health agency of canada (phac). since the data cannot be released to collaborators outside of phac, all data analyses will be undertaken by the phac staff. for further details, please contact shiliang liu, mb, phd at <shiliang.liu@phac-aspc.gc.ca>. sweden: data availability: this national cohort study was based on data from the swedish medical birth register (mbr). according to swedish law, the authors are not able to share the register data used in this study with other researchers. for further information, please see http://www.socialstyrelsen.se/publikationer2013/2013-3-27/sidor/default.aspx (in swedish language) norway: norwegian medical birth registry data is available to the public, and requests for data can be made through an electronic application. for further details, please refer to http://www.fhi.no/eway/default.aspx?pid=240&trg=main_6664&main_6664=6898:0:25,7913:1:0:0:::0:0 denmark: data availability: this national cohort study was based on data from the danish medical birth register (mbr). according to danish law and data protect agency, the authors are not able to share the register data used in this study with other researchers. for further information, please see http://www.ssi.dk/sundhedsdataogit/registre%20og%20kliniske%20databaser/de%20nationale%20sundhedsregistre/graviditet%20fodsler%20born/fodselsregister.aspx (in danish language). finland: for data access, please refer to http://www.thl.fi/en/web/thlfi-en/statistics/statistics-by-topic/sexual-and-reproductive-health/parturients-deliveries-and-births/perinatal-statistics-parturients-delivers-and-newborns and http://www.thl.fi/en/web/thlfi-en/statistics/statistics-by-topic/sexual-and-reproductive-health/parturients-deliveries-and-births/perinatal-statistics-parturients-delivers-and-newborns contact: mika gissler, thl national institute for health and welfare, po box 30, 00271 helsinki, finland, mika.gissler@thl.fi spain: http://www.msssi.gob.es/en/estadestudios/estadisticas/cmbdhome.htm for more information and documentation and submission of data request, please contact the health information institute: informacionsanitaria@msssi.es.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>