Response to the letter to the editor regarding "Mobile phone use and brain tumour risk - COSMOS, a prospective cohort study"

Funding

The Swedish part of COSMOS was supported by the Swedish Research Council (50096102); AFA Insurance (T-26:04); the Swedish Research Council for Health, Working Life and Welfare (2010-0082, 2014-0889); the Swedish Radiation Safety Authority (SSM2015-2408); and VINNOVA (P31735-1). VINNOVA received funds for this purpose from TeliaSonera AB, Ericsson AB and Telenor Sverige AB, to cover part of the data collection (funding ended 2012). The provision of funds to the COSMOS study investigators via VINNOVA was governed by agreements that guarantees COSMOS' complete scientific independence.The Danish part of COSMOS was funded by the Danish Strategic Research Council [grants 2103-05-0006/2064-04-0010].The Finnish cohort has previously been supported by funding from the National Technology Agency (TEKES), with contributions to the research program but no control of the use of funding from Nokia, mobile network providers TeliaSonera and Elisa; Pirkanmaa Hospital District competitive research funding (grant no. VTR 9 T003); Yrjoe Jahnsson Foundation (grant no. 5692); Kone Foundation, and an unrestricted grant from Mobile Manufacturers' Forum (with Pirkanmaa Hospital District as a firewall) with a contract guaranteeing the complete scientific independence of the researchers to analyse, interpret and report the results with no influence for the funding sources.The UK part of COSMOS was supported for an initial 5-year period by the Mobile Telecommunications and Health Research (MTHR), an independent programme of research into mobile phones and health jointly supported by the UK Department of Health and the mobile telecommunications industry (project reference number 091/0006) and, subsequently, funded by the UK Department of Health & Social Care via its Policy Research Programme (project reference number PR-ST-0713-00003); as well as by the National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London in partnership with Public Health England (now UK Health Security Agency, UKHSA) and Imperial College London (HPRU-2012-10141) and subsequently the NIHR HPRU in Chemical and Radiation Threats and Hazards at Imperial College London and UK HSA (grant award reference NIHR-200922). The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR, the Department of Health & Social Care or the UK HSA. PE is Director of the MRC Centre for Environment and Health supported by the Medical Research Council and Public Health England (MR/L01341X/1, 2009-2019 and solely by the Medical Research Council MR/S019669/1, 2019-; and Director of the NIHR HPRU in Chemical and Radiation Threats and Hazards at Imperial College London. PE acknowledges support from the NIHR Imperial Biomedical Research Centre. PE is a UK Dementia Research Institute (DRI) group leader, UK DRI at Imperial College London (DRI is funded by the Medical Research Council, Alzheimer's Society and Alzheimer's Research UK) and also acknowledges funding from Health Data Research UK (HDR UK). MBT's Chair and RBS's fellowship are supported by a donation from Marit Mohn to Imperial College London to support Population Child Health through the Mohn Centre for Children's Health and Wellbeing.The Dutch part of the COSMOS study was supported by The Netherlands Organization for Health Research (ZonMW) within the programme Electromagnetic Fields and Health Research, under grant numbers 85200001, 85500003, 85,200,002 and 85800001. The French part of COSMOS is funded by the French Agency for Food, Environmental and Occupational Health & Safety (ANSES), project reference number 2013-CRD-17, 2015-CRD-30, 2018-CRD-03, 2020-CRD-RF20-01 and the International Agency for Research on Cancer.All financial support for the submitted work is described above; there are no financial relationships with any organizations that might have a commercial interest in the submitted work, nor any other relationships or activities that could appear to have influenced the submitted work.