Child buccal telomere length and mitochondrial DNA content as biomolecular markers of ageing in association with air pollution, Hautekiet, Pauline, Nawrot Tim S., Janssen Bram G., Martens Dries S., De Clercq Eva M., Dadvand Payam, Plusquin Michelle, Bijnens Esmée M., and Saenen Nelly D. , Environment International, Jan-02-2021, Volume 147, (2021)