[1] New and emerging etiologies for community-acquired pneumonia with implications for therapy. A prospective multicenter study of 359 cases

[2] Multiple pathogens in adult patients admitted with community-acquired pneumonia: a one year prospective study of 346 consecutive patients

[3] Decline in microbial studies for patients with pulmonary infections

[4] The value and complications of percutaneous transthoracic lung aspiration for the etiologic diagnosis of community-acquired pneumonia