title: Education and imaging. Gastrointestinal: Signs of pneumoperitoneum.
authors.affiliation: First Department of Internal Medicine, University of the Ryukyus, Okinawa, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Hokama
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
authors.forename: C
authors.initials: C
authors.lastname: Kobashigawa
authors.forename: H
authors.initials: H
authors.lastname: Chinen
authors.forename: K
authors.initials: K
authors.lastname: Kishimoto
authors.forename: M
authors.initials: M
authors.lastname: Nakamoto
authors.forename: T
authors.initials: T
authors.lastname: Hirata
authors.forename: N
authors.initials: N
authors.lastname: Kinjo
authors.forename: F
authors.initials: F
authors.lastname: Kinjo
authors.forename: H
authors.initials: H
authors.lastname: Samura
authors.forename: T
authors.initials: T
authors.lastname: Nishimaki
authors.forename: J
authors.initials: J
authors.lastname: Fujita