. Author manuscript; available in PMC: 2019 May 27.

Published in final edited form as: J Expo Sci Environ Epidemiol. 2018 Nov 27;29(5):663–673. doi: 10.1038/s41370-018-0095-0

Table 3.

Number of participants (n), median, and inter-quartile range (IQR) of metal concentrations at first donated toenail sample.

	Lead	Arsenic	Cadmium	Manganese	Mercury
n	790	804	789	766	711
Median, (µg/g)	0.323	0.071	0.018	0.270	0.252
IQR	0.541	0.063	0.033	0.398	0.339