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Author’s response: Re ‘Mobile phone use and brain tumours in the CERENAT case–control study’
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We thank Dr Hardell for his comment1 on our article concerning analyses regarding head position of mobile phone use.2
In our analysis on ipsilateral use, we included cases who used their mobile phone on the same side as the tumour or on both sides of the head, cases who were not regular users (the reference category) and all their matched controls. In our analysis on contralateral use, we used cases who used their mobile phone on the opposite side as the tumour, cases who were not …