Bollapragada, S., Mackenzie, F., Norrie, J., Petrou, S., Reid, M., Greer, I., . . . Norman, J. E. (2006). IMOP: Randomised placebo controlled trial of outpatient cervical ripening with isosorbide mononitrate (IMN) prior to induction of labour – clinical trial with analyses of efficacy, cost effectiveness and acceptability. BioMed Central.

Bollapragada, Shrikant, Fiona Mackenzie, John Norrie, Stavros Petrou, Margaret Reid, Ian Greer, Inass Osman, và Jane E. Norman. IMOP: Randomised Placebo Controlled Trial of Outpatient Cervical Ripening With Isosorbide Mononitrate (IMN) Prior to Induction of Labour – Clinical Trial With Analyses of Efficacy, Cost Effectiveness and Acceptability. BioMed Central, 2006.

Bollapragada, Shrikant, et al. IMOP: Randomised Placebo Controlled Trial of Outpatient Cervical Ripening With Isosorbide Mononitrate (IMN) Prior to Induction of Labour – Clinical Trial With Analyses of Efficacy, Cost Effectiveness and Acceptability. BioMed Central, 2006.