<unk>  is essential for life as a catalytic center for vitamin B12. Toxicity is rare.<unk>  has been reported through the following exposures:
Orthopedic hip prostheses containing<unk> 
Work-related<unk>  exposure
Excessive drinking of beer containing<unk>  sulfate
Orthopedic hip prostheses containing<unk> 
Work-related<unk>  exposure
Excessive drinking of beer containing<unk>  sulfate
Cobalt toxicity
Aluminum toxicity
Gold toxicity
Antimony toxicity
Mercury toxicity
Arsenic toxicity
Chromium toxicity
Barium toxicity