Langell JT, Mulvihill SJ (May 2008). "Gastrointestinal perforation and the acute abdomen". The Medical Clinics of North America. 92 (3): 599–625, viii–ix. doi:10.1016/j.mcna.2007.12.004. PMID18387378.
Langell JT, Mulvihill SJ (May 2008). "Gastrointestinal perforation and the acute abdomen". The Medical Clinics of North America. 92 (3): 599–625, viii–ix. doi:10.1016/j.mcna.2007.12.004. PMID18387378.
Langell JT, Mulvihill SJ (May 2008). "Gastrointestinal perforation and the acute abdomen". The Medical Clinics of North America. 92 (3): 599–625, viii–ix. doi:10.1016/j.mcna.2007.12.004. PMID18387378.
Langell JT, Mulvihill SJ (May 2008). "Gastrointestinal perforation and the acute abdomen". The Medical Clinics of North America. 92 (3): 599–625, viii–ix. doi:10.1016/j.mcna.2007.12.004. PMID18387378.
Langell JT, Mulvihill SJ (May 2008). "Gastrointestinal perforation and the acute abdomen". The Medical Clinics of North America. 92 (3): 599–625, viii–ix. doi:10.1016/j.mcna.2007.12.004. PMID18387378.
Langell JT, Mulvihill SJ (May 2008). "Gastrointestinal perforation and the acute abdomen". The Medical Clinics of North America. 92 (3): 599–625, viii–ix. doi:10.1016/j.mcna.2007.12.004. PMID18387378.