title: Occult pneumothorax, revisited.
authors.affiliation: Departement of Internal Medicine, Mercy Hospital and Medical Center, Chicago, Illinois, USA. hesham_omar2003@yahoo.com.
authors.forename: Hesham R
authors.initials: HR
authors.lastname: Omar
authors.forename: Hany
authors.initials: H
authors.lastname: Abdelmalak
authors.forename: Devanand
authors.initials: D
authors.lastname: Mangar
authors.forename: Rania
authors.initials: R
authors.lastname: Rashad
authors.forename: Engy
authors.initials: E
authors.lastname: Helal
authors.forename: Enrico M
authors.initials: EM
authors.lastname: Camporesi