Diseased, depressed and drunk: A short history of candidates' many health problems

The revelation of Hillary Clinton's pneumonia diagnosis over the weekend, coupled with the images of her stumbling while leaving a Sept. 11 memorial event, has fueled critics who have long called on the Democratic nominee for president to release her health records. 
Clinton's diagnosis has brightened the spotlight on presidential candidates' medical records, one with a short history of transparency and a long history of controversy.
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