Should Controls With Respiratory Symptoms Be Excluded From Case-Control Studies of Pneumonia Etiology? Reflections From the PERCH Study.
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Clin Infect Dis. 2017 Jun 15;64(suppl_3):S205-S212. doi: 10.1093/cid/cix076.
Clin Infect Dis. 2017.
PMID: 28575354
Free PMC article.
Review.