Pujol J, Fenoll R, Macia D, Martinez-Vilavella G, Alvarez-Pedrerol M, Rivas I, Forns J, Deus J, Blanco-Hinojo L, Querol X, Sunyer J. Airborne copper exposure in school environments associated with poorer motor performance and altered basal ganglia. Brain Behav. 2016 Apr 22;e00467. doi: 10.1002/brb3.467
Dreyer NA, Loughlin JE, Rothman KJ. Epidemiologic safety surveillance of cellular telephones in the US. Radiat Prot Dosimetry. 1999 Jun;83(1):159-63.