Part,  Chapter, Paragraph
1   II,     5.  1.  1|    some chemicals, such as methyl mercury, cadmium compounds,
2  III,    10.  1    | system disorders~lead~PCBs~methyl mercury~manganese~some solvents~
3  III,    10.  3.  2| system disorders~lead~PCBs~methyl mercury~manganese~some solvents~