Comment on

• How well do adolescents recall use of mobile telephones? Results of a validation study.

  Inyang I, Benke G, Morrissey J, McKenzie R, Abramson M. Inyang I, et al. BMC Med Res Methodol. 2009 Jun 12;9:36. doi: 10.1186/1471-2288-9-36. BMC Med Res Methodol. 2009. PMID: 19523193 Free PMC article.
• An evaluation of self-reported mobile phone use compared to billing records among a group of engineers and scientists.

  Shum M, Kelsh MA, Sheppard AR, Zhao K. Shum M, et al. Bioelectromagnetics. 2011 Jan;32(1):37-48. doi: 10.1002/bem.20613. Bioelectromagnetics. 2011. PMID: 20857456
• Predictors and overestimation of recalled mobile phone use among children and adolescents.

  Aydin D, Feychting M, Schüz J, Andersen TV, Poulsen AH, Prochazka M, Klæboe L, Kuehni CE, Tynes T, Röösli M. Aydin D, et al. Prog Biophys Mol Biol. 2011 Dec;107(3):356-61. doi: 10.1016/j.pbiomolbio.2011.08.013. Epub 2011 Sep 9. Prog Biophys Mol Biol. 2011. PMID: 21907731
• Patterns in wireless phone estimation data from a cross-sectional survey: what are the implications for epidemiology?

  Redmayne M, Smith E, Abramson MJ. Redmayne M, et al. BMJ Open. 2012 Sep 4;2(5):e000887. doi: 10.1136/bmjopen-2012-000887. Print 2012. BMJ Open. 2012. PMID: 22952160 Free PMC article.
• An international prospective cohort study of mobile phone users and health (COSMOS): Factors affecting validity of self-reported mobile phone use.

  Toledano MB, Auvinen A, Tettamanti G, Cao Y, Feychting M, Ahlbom A, Fremling K, Heinävaara S, Kojo K, Knowles G, Smith RB, Schüz J, Johansen C, Poulsen AH, Deltour I, Vermeulen R, Kromhout H, Elliott P, Hillert L. Toledano MB, et al. Int J Hyg Environ Health. 2018 Jan;221(1):1-8. doi: 10.1016/j.ijheh.2017.09.008. Epub 2017 Sep 20. Int J Hyg Environ Health. 2018. PMID: 29056311