Murphy, Deirdre J; Liebling, Rachel E; Verity, Lisa; Swingler, Rebecca; Patel, Roshni (2001). "Early maternal and neonatal morbidity associated with operative delivery in second stage of labour: A cohort study". The Lancet. 358 (9289): 1203–7. doi:10.1016/S0140-6736(01)06341-3. PMID11675055. S2CID205937677.
O'Mahony, Fidelma; Settatree, Ralph; Platt, Craig; Johanson, Richard (May 2005). "Review of singleton fetal and neonatal deaths associated with cranial trauma and cephalic delivery during a national intrapartum-related confidential enquiry". BJOG: An International Journal of Obstetrics & Gynaecology. 112 (5): 619–626. doi:10.1111/j.1471-0528.2004.00508.x. ISSN1470-0328. PMID15842287. S2CID11180868.
Murphy, Deirdre J; Liebling, Rachel E; Verity, Lisa; Swingler, Rebecca; Patel, Roshni (2001). "Early maternal and neonatal morbidity associated with operative delivery in second stage of labour: A cohort study". The Lancet. 358 (9289): 1203–7. doi:10.1016/S0140-6736(01)06341-3. PMID11675055. S2CID205937677.
O'Mahony, Fidelma; Settatree, Ralph; Platt, Craig; Johanson, Richard (May 2005). "Review of singleton fetal and neonatal deaths associated with cranial trauma and cephalic delivery during a national intrapartum-related confidential enquiry". BJOG: An International Journal of Obstetrics & Gynaecology. 112 (5): 619–626. doi:10.1111/j.1471-0528.2004.00508.x. ISSN1470-0328. PMID15842287. S2CID11180868.
Murphy, Deirdre J; Liebling, Rachel E; Verity, Lisa; Swingler, Rebecca; Patel, Roshni (2001). "Early maternal and neonatal morbidity associated with operative delivery in second stage of labour: A cohort study". The Lancet. 358 (9289): 1203–7. doi:10.1016/S0140-6736(01)06341-3. PMID11675055. S2CID205937677.
O'Mahony, Fidelma; Settatree, Ralph; Platt, Craig; Johanson, Richard (May 2005). "Review of singleton fetal and neonatal deaths associated with cranial trauma and cephalic delivery during a national intrapartum-related confidential enquiry". BJOG: An International Journal of Obstetrics & Gynaecology. 112 (5): 619–626. doi:10.1111/j.1471-0528.2004.00508.x. ISSN1470-0328. PMID15842287. S2CID11180868.
O'Mahony, Fidelma; Settatree, Ralph; Platt, Craig; Johanson, Richard (May 2005). "Review of singleton fetal and neonatal deaths associated with cranial trauma and cephalic delivery during a national intrapartum-related confidential enquiry". BJOG: An International Journal of Obstetrics & Gynaecology. 112 (5): 619–626. doi:10.1111/j.1471-0528.2004.00508.x. ISSN1470-0328. PMID15842287. S2CID11180868.