public health 50 medical laws and legislation 47 environmental exposure,environmental sciences,guidelines 30 health surveys - statistic methods 28 pharmacology 22 medicine - research 16 medical policy 10 hơn ... communicable diseases,infection 9 malaria 7 pesticides 7 aids,communicable diseases,epidemiology,health education 6 epidemiology 6 nutrition 6 birth control 5 mental disorders 5 AIDS,communicable diseases 4 biological products - standards 4 biology 4 dentistry 4 diarrhea 4 health education 4 parasitology 4 drug industry,drugs - standards,quality control 3 drug residues - analysis,drug therapy - veterinary,food contamination 3 food additive - toxicity,food additives - analysis,food contamination 3 medical policy,public health 3 occupational medicine,public health 3 pediatrics 3 vitamines 3 Public health 2 ít hơn ...