British journal of anaesthesia
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Randomized Controlled Trial Comparative Study
Randomized trial of anaesthetic interventions in external cephalic version for breech presentation.
Spinal anaesthesia improves the success of external cephalic version for breech presentation during pregnancy.
pearl -
Letter Randomized Controlled Trial Comparative Study
Structured approach to ultrasound-guided identification of the cricothyroid membrane: a randomized comparison with the palpation method in the morbidly obese.