Jirasiritham, Siriwan, Thanyalak Thamjamrassri, Prima Jarutat, and Adithep Jaovisidha. 2016. “Can 0.15 mg. intrathecal morphine be effective in post cesarean pain control in comparison with 0.2 mg.?”. Thai Journal of Anesthesiology 41 (3):127-28. https://he02.tci-thaijo.org/index.php/anesthai/article/view/58512.