Thorax · 2011 · 216 citations · 85 references
Veterinary MedicineInfectious DiseasesCommunicable Disease ControlRespiratory DiseaseRespiratory Infectious DiseasesTravel-associated InfectionsTravel-related Infectious DiseasesDirect Person-to-person TransmissionRespiratory Illness SurveillanceRespiratory Infections In TravelersTravel-associated Respiratory Infections
is possible because of proximity to others with contagious diseases (ie, resulting from direct person-to-person transmission).
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Two-, six-, and 12-minute walking tests in respiratory disease.
R. J. A. Butland, J. A. Pang, E R Gross et al. · BMJ · 1982 · 1.7K citations · Full text