Related by context. Frequent words. (Click for all words.) 51 circulatory diseases 45 Passive smoking 45 asthma chronic bronchitis 44 asthma bronchitis 44 respiratory diseases 44 asthma sufferers 44 Imperial College 43 aggravate asthma 42 asthma eczema 42 nitrogen dioxide 41 Glenfield Hospital 41 air pollution 41 pneumonia bronchitis 40 Diesel exhaust 40 NUTS code 40 polycyclic aromatic hydrocarbons PAHs 40 journal Thorax 40 Respiratory Medicine 39 lung diseases 39 Psychological Medicine 39 melioidosis 39 Rothamsted Research 39 vector borne 39 respiratory 39 chronic respiratory 38 potentially lethal 38 journal Epidemiology 38 chronic obstructive lung 38 respiratory irritant 38 nitrogen dioxide NO2 38 Royal Brompton 38 smog 37 Heriot Watt University 37 Ninewells Hospital 37 pulmonary diseases 37 organophosphate pesticides 37 hardened arteries 37 asthmatics 37 passive smoking 37 journal Gut 37 respiratory illnesses 37 Nitrogen oxides 37 Environmental Epidemiology 37 Dust mites 37 potentially fatal 37 MD FRCP 36 asthma emphysema 36 RESEARCHERS 36 Hip fractures 36 Chronic inflammation 36 smoggy 36 reseachers 36 Autoimmune diseases 36 Abertay Dundee 36 East Anglia UEA 35 coughing wheezing 35 vascular biology 35 #,# butadiene 35 toxicants 35 Development IIED 35 Papworth Hospital 35 pollutants emitted 35 Charing Cross Hospital 35 POTENTIALLY 35 Glasgow Caledonian University 35 Birth defects 35 cardio vascular diseases 35 diesel fumes 35 haematologist 35 Health Protection Agency 35 airborne toxins 35 Ninewells 35 NO2 35 obstructive lung 35 trigger allergic reactions 35 pulmonary disorders 35 Roslin Institute 34 bronchial asthma 34 Birkbeck College 34 consultant urologist 34 chronic lung 34 Boffins 34 particulate pollution 34 POLLUTION 34 animal dander 34 Microbiologists 34 cardio vascular disease 34 embolisms 34 heart arrhythmias 34 powerful neurotoxin 34 Tobacco Smoke 34 Knebworth Herts SG3 6RR 34 lifethreatening 34 Wellcome Trust Centre 34 atmospheric ozone 34 asthma 34 flulike 34 heavily polluted 34 Biological Standards 34 seizures coma 34 diseases afflicting