@article{7e581e3894ac41e7af7c1bc094577c7e,
title = "Pneumoperitoneum caused by perforation of pyometra associated with a lost intrauterine device and perforated malignancy of the sigmoid colon",
author = "Chen, \{Pi Hua\} and Hsien-Liu and Lee, \{Su Long\} and Chang, \{Chih Yang\} and Chang, \{Chi Chang\}",
year = "2011",
month = mar,
doi = "10.1016/j.tjog.2009.10.004",
language = "English",
volume = "50",
pages = "124--125",
journal = "Taiwanese Journal of Obstetrics and Gynecology",
issn = "1028-4559",
publisher = "Elsevier Ltd",
number = "1",
}