title: The Spanish influenza pandemic seen through the BMJ's eyes: observations and unanswered questions.
authors.affiliation: Acute Respiratory Infections Group, Cochrane Collaboration, Rome, Italy. jefferson.tom@gmail.com
authors.forename: Tom
authors.initials: T
authors.lastname: Jefferson
authors.forename: Eliana
authors.initials: E
authors.lastname: Ferroni
mesh_terms: D002980:Climate; D004196:Disease Outbreaks / Q000266:history*; D004781:Environmental Exposure; D005739:Gas Poisoning / Q000150:complications / Q000266:history; D049673:History, 20th Century; D006801:Humans; D007252:Influenza Vaccines / Q000266:history; D007251:Influenza, Human / Q000453:epidemiology / Q000266:history*; D008887:Military Medicine / Q000266:history; D010506:Periodicals as Topic; D013030:Spain
chemical_list: D007252:Influenza Vaccines