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. 2021 Mar 4;11(3):e039541. doi: 10.1136/bmjopen-2020-039541

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Mixed models were used to evaluate the effects of lead exposure and ferritin on fasting blood sugar and haemoglobin A1c (HbA1c). (A) Changes in fasting blood glucose according to serum ferritin levels in cohort A. (B) Changes in HbA1c according to serum ferritin levels in cohort A. (C) Changes in fasting blood glucose according to lead exposure in cohort A. (D) Changes in HbA1c according to lead exposure in cohort A. (E) Changes in fasting blood glucose according to serum ferritin levels and lead exposure in cohort A. (F) Changes in HbA1c according to serum ferritin levels and lead exposure in cohort A.