1. The separate needle is superior to the needle-through-needle technique for combined spinal epidural anaesthesia;Cook;Anaesthesia,2001
2. Placing the epidural catheter before intrathecal injection during combined spinal epidural anaesthesia;Evans;Anaesthesia,2001
3. Une nouvelle auguille pour l'anaesthesie rachidienne et peridurale conjointe;Eldor;Annals Francais Anaesthesiologie et Reanimation,1990