Abdullah, Surg Cdr Khalida Nasreen, et al. “THE EFFECT OF HYOSCINE BUTYLBROMIDE ON 1ST STAGE OF LABOUR IN TERM PREGRENCACY: Effect of Hyoscine Butylbromide in Pregnancy”. Pakistan Armed Forces Medical Journal, vol. 60, no. 2, June 2010, pp. 278-81, https://pafmj.org/PAFMJ/article/view/860.