Related by context. Frequent words. (Click for all words.) 49 passive smoking 47 Passive smoking 46 Bekedam 46 nonsmokers 43 secondhand tobacco 42 WHO 42 smokers 42 Lubroth 42 oropharyngeal cancer 41 Health Organisation WHO 41 Lee Jong Wook 41 secondhand smoke 40 Health Organization WHO 40 Health Organisation 40 Epidemiology Unit 40 organ donor register 39 secondhand smoke exposure 39 asthma emphysema 39 foodborne diseases 39 Cigarette smoking 39 Health Protection Agency 39 Health Organization 39 notifiable disease 39 cardio vascular disease 39 Chen Chien jen 38 asthma bronchitis 38 prevalence 38 Lancet 38 occupational exposures 38 Nonsmokers 37 respiratory diseases 37 quitline 37 minister Dawn Primarolo 37 Sir Liam Donaldson 37 David Heymann WHO 37 acoustic neuroma 37 Ebola outbreak 37 Gerberding 37 latent TB infection 37 smoking 37 Ebola Reston virus 37 cotinine levels 37 Epidemiological studies 37 respiratory illnesses 37 communicable diseases 37 cigarette smoking 36 Raviglione 36 spokesman Gregory Hartl 36 smokefree 36 AH#N# 36 CDC 36 A/H#N# flu cases 36 pneumococcal vaccination 36 HBV infection 36 Cancer Epidemiology 36 Acquired Immune Deficiency Syndrome 36 IDUs 36 confidence interval #.#-#.# 35 acute bronchitis 35 antismoking 35 CDC Morbidity 35 UNAids 35 NNK 35 shorter telomeres 35 Lung cancer 35 pesticide poisoning 35 malaria endemic countries 35 HIV AIDS prevalence 35 invasive cervical cancer 35 noncommunicable diseases 35 Bowel cancer 35 chronic rhinosinusitis 35 vitamin D intake 35 nonsmoking 35 epidemiological 35 Haiti cholera epidemic 35 cigarettes smoked 35 childbearing age 34 Prevention CDC 34 COPD 34 HIV diagnoses 34 epidemiological studies 34 lung cancer 34 DoH 34 influenza A/H#N# 34 Vallat 34 A/H#N# flu virus 34 incidence 34 influenza immunization 34 Disease Control CDC 34 Juan Lubroth 34 Influenza A/H#N# 34 die prematurely 34 Richard Peto 34 LQTS 34 HIV infected 34 SUDEP 34 tobacco specific nitrosamines 34 RCOG 34 thyroid cancers 34 kidney transplant recipients