KF Walker; AL Cohen; SH Walker; KM Allen; DL Baines; JG Thornton. The dangers of the day of birth. British Journal of Obstetrics & Gynaecology. 2014-02-13, 121 (6): 714–8. PMID 24521517. doi:10.1111/1471-0528.12544.
Soreide, Kjetil; Christian Lycke Ellingsen; Vibeke Knutson. How Dangerous is BASE Jumping? An Analysis of Adverse Events in 20,850 Jumps From the Kjerag Massif, Norway. The Journal of Trauma: Injury, Infection, and Critical Care. May 2007, 62 (5): 1113–1117. ISSN 0022-5282. PMID 17495709. doi:10.1097/01.ta.0000239815.73858.88.
KF Walker; AL Cohen; SH Walker; KM Allen; DL Baines; JG Thornton. The dangers of the day of birth. British Journal of Obstetrics & Gynaecology. 2014-02-13, 121 (6): 714–8. PMID 24521517. doi:10.1111/1471-0528.12544.
Soreide, Kjetil; Christian Lycke Ellingsen; Vibeke Knutson. How Dangerous is BASE Jumping? An Analysis of Adverse Events in 20,850 Jumps From the Kjerag Massif, Norway. The Journal of Trauma: Injury, Infection, and Critical Care. May 2007, 62 (5): 1113–1117. ISSN 0022-5282. PMID 17495709. doi:10.1097/01.ta.0000239815.73858.88.
Soreide, Kjetil; Christian Lycke Ellingsen; Vibeke Knutson. How Dangerous is BASE Jumping? An Analysis of Adverse Events in 20,850 Jumps From the Kjerag Massif, Norway. The Journal of Trauma: Injury, Infection, and Critical Care. May 2007, 62 (5): 1113–1117. ISSN 0022-5282. PMID 17495709. doi:10.1097/01.ta.0000239815.73858.88.