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Conception and design: GB, NS, and GS. Analysis and interpretation of data: GB and MO-P. Drafting of manuscript: GB, NS, PM, and GS. Critical revision of manuscript: GB and MO-P. Approval of the final version: GB.
We thank Theopisti Lymperopoulou and Kalliopi Balta-Brouma of the Environment and Quality of Life Center, School of Chemical Engineering, National Technical University of Athens, Greece, for their contributions in the measurement of serum tantalum levels. We also thank Periklis Foukas of the Second Department of Pathology, “ATTIKON” University General Hospital, Athens, for preparing the tissue sample. We did not receive any specific grants for this work from any funding agencies in the public, commercial, and not-for-profit sectors.
No competing interests declared.