DeBakey VA Medical Center, Houston, Texas and assistant professor of medicine at Baylor College of Medicine who has wrote several studies on diagnostic error, says that while the Hopkins study confirms previous research, malpractice data provide a limited picture.

WSJ: Adding Up Diagnosis Errors

Dr Alan Johnson, of the Public Health Laboratory Service's antibiotic resistance monitoring and reference laboratory, said the study confirmed data from previous research.

BBC: Nursery

Dr Dermot Ryan, a GP in Loughborough and clinical research fellow in primary care respiratory medicine at the University of Aberdeen, said the data on chest infections backed up previous research which had shown cuts in antibiotic use had driven up rates of pneumonia.

BBC: NEWS | Health | Antibiotics 'unnecessarily used'

Like much of the previous research on coffee, the study was based on survey data -- in this case, a single questionnaire distributed in the mid-1990s -- that may provide an incomplete picture of the participants' overall health and lifestyle.

CNN: Coffee drinking linked to longer life

Shipments of compact cameras declined last year, but those of the new type nearly doubled from the previous year, with projections of a fivefold increase by 2015, according to market-research firm International Data Corp.

WSJ: Camera Makers Enter New Mirrorless Arena for Serious Photographers