1 “...patient-controlled intravenous analgesia), neither type nor timing affected cesarean delivery rates...”

2 “...patient-controlled intravenous analgesia), neither type nor timing affected cesarean delivery rates...”

3 “...Because the balance of benefits and harms, at both the individual level and health system level...”

4 “...Because the balance of benefits and harms, at both the individual level and health system level...”