Intraperitoneal ropivacaine for post-operative pain following laparoscopic tubal ligation: a randomised double-blind placebo-controlled trial oleh Jerilee Mariam Khong Azhary, Aizura Syafinaz Adlan, Sivakumar S. Balakrishnan, Siti Rohayu Kamarul Baharain, Syeda Nureena Syed Jafer Hussain Zaidi, Nuguelis Razali, Mukhri Hamdan, Noor Azmi Mat Adenan, Siti Zawiah Omar