1. Inequities in the use of cesarean section deliveries in the world;Gibbons;Am J Obstet Gynecol,2012
2. Gibbons L. The global numbers and costs of additionally needed and unnecessary caesarean sections performed per year: Overuse as a barrier to universal coverage. World Health Report 2010; Background Paper, 30.
3. Topics in spinal anaesthesia;Whizar Lugo;J Anesth Crit Care,2014
4. Reduction in halothane anesthetic requirement by clonidine, an alpha-adrenergic agonist;Bloor;Anesth Analg,1982
5. Studies in the primate on the analgetic effects associated with intrathecal actions of opiates, alpha-adrenergic agonists and baclofen;Yaksh;Anesthesiology,1981