- 1. Nobahari , Mahnaz. Meta-analysis of child marriage studies in Iran: Analysis of its causes, consequences and solutions, Journal of Islamic Human Sciences,23, 2020:114- 125.
2.Zare , M. Ziapor,A. Reproductive health status of adolescent mothers in an Iranian environment, scientific research journal, Ardabil University of Medical Sciences and Health Services,2022.
- Gatbonton, R. R. G. Educational Experiences of Adolescent Mothers while Studying College in the Philippines. IAFOR Journal of Education, 9(1),2021: 41-58.
4.WHO. Global health estimates 2015: deaths by cause, age, sex, by country and by region,2020: 2000–2015. Retrieved from Geneva.
5 Sadat hossini, Zahra. Evaluation and investigation of the demographic status of late fertility of working women in the central part of Tehran. Master's Thesis, Demography, Islamic Azad University, Central Tehran,2010.
- Miri, Mohammadreza, melaki moghadam, hakime. Factors affecting the age of first pregnancy in married couples of Birjand city. Journal of Qom University of Medical Sciences,2000.
- Nobahari , Mahnaz . Meta-analysis of child marriage studies in Iran: Analysis of its causes, consequences and solutions, Journal of Islamic Human Sciences,23,2020: 114- 125.
- Moradi , Samira. Examining the prevalence and factors affecting early and late births in 6 months before and 6 months after the covid-19 pandemic. Master's thesis,
Tarbiat Modares University, Tehran,2021.
9.Ashimolowo, O. R., Ojebiyi, W. G., Adelakun, I. I., Odediran, O. F., Soetan, O. J., & Iskil-Ogunyomi, S. O. Causes and consequences of teenage pregnancy among rural youths in Ejigbo Local Government area of Osun State, Nigeria. Scholarly Journal of Science Research and Essay, 6(1),2017:10-17.
- Gbogbo, S. Early motherhood: voices from female adolescents in the Hohoe Municipality, Ghana—a qualitative study utilizing Schlossberg’s Transition Theory. International Journal of Qualitative Studies on Health and Well-being, 15(1),2020: 1716620. http://doi.org/10.1080/17482631.2020.1716620
11.Monari, N., Orwa, J., & Agwanda, A. Adolescent fertility and its determinants in Kenya: Evidence from Kenya demographic and health survey 2014. Plos one, 17(1), e,2022:0262016.
12.Moshi, F. V., & Tilisho, O. The magnitude of teenage pregnancy and its associated factors among teenagers in Dodoma Tanzania: a community-based analytical cross-sectional study. Reproductive Health, 20(1),2023: 28.
- Musa, S. S., Odey, G. O., Musa, M. K., Alhaj, S. M., Sunday, B. A., Muhammad, S. M., & Lucero- Prisno, D. E. Early marriage and teenage pregnancy: The unspoken consequences of COVID-19 pandemic in Nigeria. Public Health in Practice, 2,2021: 100152. https://doi.org/10.1016/j.puhip.2021.100152
- Ministry of Health and Medical Education. Safe Motherhood National Program: Integrated Maternal Health Care. Tehran: Office of Family and Population Health, Department of Maternal Health,2022.
- Family and School Population Health Department of Golestan Province Health Center. Pre-pregnancy services promotion project 2019- 2022, Golestan University of Medical Sciences and Health Services,2022.
- Shejah , Mohammad, Shejah, Hossin, Shejah, Gharai, Esmail. Investigating the prevalence of preterm birth and its related factors in pregnant women referred to Bent Al-Hadi Hospital in Bojnord city. Journal of North Khorasan University of Medical Sciences No 7.2015: 855-863.
- Talebi , Maryam. Antenatal depression and insomnia in pregnant women: predictive role of nocturnal rumination and mindfulness. Women and society magazine, No 13,2022: 174-184.
- Tavoosi , M. Motlagh,M. Eslami, M. Haeri mehrizi, A. Montazeri A. Having children and related factors from the perspective of the people of Tehran: a preliminary test of a national study. Paish magazine, No 11,2017: 597-605.
- Meghdadi , Mohammadmehdi, Javadpor, Maryam. The effect of early marriage on children's sexual health and coping mechanisms, Journal of medical law , No 11,2017: 31-6o.
- Aghababai , S. Rafar, B, Rahele, M. Contraceptive methods in unwanted pregnancies, Journal of Shahid Sadoughi University of Medical Sciences and Health Services, azd, No18.2010: 307-314.
- Khooshideh, M., & Shahriari, A. Pregnancy outcome in teenagers in East Southern of Iran. JPMA. The Journal of the Pakistan Medical Association, 58(10),2008: 541.
- Shiri, T. Bidariuan, S. Investigating economic-demographic factors affecting the pregnancy of women aged 15 to 49. Journal of social science research.No 3. 2009:193-197.
- Melki moghadam, H. Miri M. Factors affecting the age of first pregnancy among women in Birjand city. Journal of Qom University of Medical Sciences, Volume 12, Number 3,2018.
- Kassa, B. G., Belay, H. G., & Ayele, A. D. Teenage pregnancy and its associated factors among teenage females in Farta woreda, Northwest, Ethiopia, 2020: A community-based cross-sectional study. Population Medicine, 3(July),2021: 1-8.
- Uwizeye, D., Muhayiteto, R., Kantarama, E., Wiehler, S., & Murangwa, Y. Prevalence of teenage pregnancy and the associated contextual correlates in Rwanda. Heliyon, 6(10), e,2020:5037.
26.Thapa, P., Thapa, P., Shrestha, D. B., Budhathoki, P., Karki, B., & Mahat, BTeenage pregnancy and the sociodemographic attributes as a major contributor: Findings from an urban referral center in Nepal. World Journal of Obstetrics and Gynecology, 10(2), 2021:16-25.
- Wado, Y. D., Sully, E. A., & Mumah, J. N. Pregnancy and early motherhood among adolescents in five East African countries: a multi-level analysis of risk and protective factors. BMC pregnancy and childbirth, 19(1), 2019:1-11.
- Kiani, G. Investigating teenage pregnancy: a challenge for health, Golestan University of Medical Sciences and Health Services Master's Terminal,2019.
- .Zamani, P., Ziaie, T., Mokhtari Lakeh, N., & Kazemnejad Leili, E. Childbirth experience and its related socio-demographic factors in mothers admitted to postpartum ward of AL Zahra Hospital of Rasht City,(Iran). Qom University of Medical Sciences Journal, 12(11),2019: 70-78.
- Terefe, B. The prevalence of teenage pregnancy and early motherhood and its associated factors among late adolescent (15–19) years girls in the Gambia: based on 2019/20 Gambian demographic and health survey data. BMC Public Health, 22(1),2022: 1767.
- Oner, S., Yapici, G., Kurt, A. O., Sasmaz, T., & Bugdayci, R. The sociodemographic factors related with the adolescent pregnancy. Asian Pacific journal of reproduction, 1(2), 2012:135-141.
- Asare, R. O., Nukpezah, R. N., Azowine, F., Cheremeh, L. G., Ayinpoka, A. S., Asumadu, O. D. K., & Mills, E. Socio-Demographic and Other Determinants of Teen Pregnancies in the Tamale Metropolis: A Community-Based Unmatched Case-Control Study. Health Science Journal, 16(2),2022: 1-15.