Ahmed, S. I. ., Saber, N. M., Shalaby, S. F. and Dawoud, S. E. S. M. (2021) “The effect of instructional guidelines intervention on pregnant women’s knowledge, clinical outcomes, and self-efficacy regarding prevention of osteoporosis”, International journal of health sciences, 5(S2), pp. 965–981. doi: 10.53730/ijhs.v5nS2.13979.