I1, I12, I18, I20, I3
I1, I12, I18, I20, I3
D90, D91, C93, I12, I1, D15, D62, D64, D81, I18
I Health, Education, an Welfare; J Labor and Demographic Economics
O - Economic Development, Innovation, Technological Change, and Growth, I12 (Health Behavior), D90
D83 Search, Learning, Information and Knowledge, I12 Health Behavior, K32 Energy, Environmental, Health, and Safety Law
J1, I1, I3,and O1
I1, I3, H4
I1, J81
I1, I10, I18, J11