title: Proving etiologic relationships to disease: the particular problem of human coronaviruses.
authors.affiliation: Division of Infectious Diseases, Children's Hospital Boston, Harvard Medical School, Boston, MA 02115, USA. kenneth.mcintosh@childrens.harvard.edu
authors.forename: Kenneth
authors.initials: K
authors.lastname: McIntosh
mesh_terms: D017934:Coronavirus / Q000302:isolation & purification*; D018352:Coronavirus Infections / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D012141:Respiratory Tract Infections / Q000821:virology*