Fiona Bragg, David A Cromwell, Leroy C Edozien, Ipek Gurol-Urganci, Tahir A Mahmood, Allan Templeton et al
Bragg F, Cromwell D A, Edozien L C, Gurol-Urganci I, Mahmood T A, Templeton A et al.
Variation in rates of caesarean section among English NHS trusts after accounting for maternal and clinical risk: cross sectional study
BMJ 2010; 341 :c5065
doi:10.1136/bmj.c5065