[1] World Health Organization (2004) Reproductive Health Strategy. WHO, Geneva.
[2] Federal Ministry of Health (2009) Assessment Report of the National Responses to Young People’s Sexual and Reproductive Health in Nigeria.
[3] Biddle, A., Hessburg, L., Singh, S., Bankole, A. and Darubi, L. (2007) Protecting the Next Generation in Sub-Saharan Africa. Alan Guttermacher Institute.
[4] Alan Guttermacher Institute (2006) Risk and Protection: Youth and HIV/AIDS in Sub-Saharan Africa. Alan Guttermacher Institute, New York.
[5] Population Reference Bureau (2006) The World Youth 2006 Data Sheet. (Accessed 22/04/10).
http://www.prb.org/publications/Datasheets/2006/...aspx
[6] National Population Commission (NPC) and ICF Macro (2009) Nigeria Demographic and Health Survey 2008. National Population Commission and ICF Macro, Abuja, Nigeria.
[7] Okpani, A.O. and Okpani, J.U. (2000) Sexual Activity and Contraceptive Use among Female Adolescents—Report from Port Harcourt, Nigeria. African Journal of Reproductive Health, 4, 40-47.
http://dx.doi.org/10.2307/3583241
[8] Okereke, C.I. (2010) Unmet Reproductive Health Needs. Health Seeking Behavior of Adolescents in Owerri, Nigeria. African Journal of Reproductive Health, 14, 43-54.
[9] Adekunle, L.A., Ricketts, O.Z., Ajunwon, A.J. and Ladipo, O.A. (2009) Sexual and Reproductive Health Knowledge, Behavior and Education Needs of In-School Adolescents in Northern Nigeria. African Journal of Reproductive Health, 13, 37-39.
[10] Bryan, D. and Packer, M.S. (2004) Adolescents, Unwanted Pregnancy and Abortion. Ipas, Chapel Hill.
[11] Mabiala, J.R., Massamba, A., Bantsima, T. and Senga, P. (2008) Sexual Behaviour among Adolescent in Brazzaville, Congo. Journal de Gynécologie Obstétrique et Biologie de la Reproduction, 37, 510-515.
[12] Onyeka, I.N., Miettola J., Ilika, A.L. and Vaskilampi, T. (2011) Unintended Pregnancy and Termination of Studies among Students in Anambra State, Nigeria. African Journal of Reproductive Health, 15, 109.
[13] World Health Organization (2008) Adolescent Pregnant-Unmet Needs Undone Deeds. WHO, Geneva.
[14] Elfebein, D.S. and Felice, M.E. (2003) Adolescent Pregnancy. Pediatric Clinics of North America, 50, 781-800.
http://dx.doi.org/10.1016/S0031-3955(03)00069-5
[15] Guttmacher Policy Review (2007) Young People Need Help in Preventing Pregnancy and HIV, How Will the World Respond? GMI.
[16] Alan Guttmacher Institute (2011) Facts on Induced Abortion Worldwide in Brief. Fact Sheet, Alan Guttermacher Institute.
[17] Odu, O.O., Asekun, E.O., Bamidele, J.O., Egbewale, B.E., Amusan, O.A. and Olowu, A.O. (2008) Knowledge, Attitudes to HIV/AIDS and Sexual Behavior of Students in a Tertiary Institution in South-Western Nigeria.
[18] Aderibigbe, S.A. and Araoye, M.O. (2008) Effect of Health Education on Sexual Behavior of Students of Public Secondary Schools in Llorin, Nigeria. European Journal of Public Health, 24, 33-41
[19] Okereke, C.I. (2010) Unmet Reproductive Health Needs. Health Seeking Behavior of Adolescents in Owerri, Nigeria. African Journal of Reproductive Health, 14, 43-54.
[20] Grimes, D.A., Benson, J., Singh, S., Romero, M., Ganatra, B., Okonofua, F.E., et al. (2006) Unsafe Abortion: The Preventable Pandemic. The Lancet, 368, 1908-1919.
http://dx.doi.org/10.1016/S0140-6736(06)69481-6
[21] Raufu, A. (2002) Unsafe Abortion Cause 20,000 Deaths a Year in Nigeria. BMJ, 325, 988.
http://dx.doi.org/10.1136/bmj.325.7371.988/d
[22] Alan Guttmacher Institute (2006) Adolescents in Ghana New York. Facts in Brie, Alan Guttermacher Institute.
[23] Moore, A.M., Biddlecom, A.E. and Zulu, E.M. (2007) Prevalence and Meanings of Exchange of Money or Gifts for Sex in Unwanted Adolescent Sexual Relationships in Sub-Saharan Africa. African Journal of Reproductive Health, 11, 44-61.
http://dx.doi.org/10.2307/25549731
[24] USAID (2003) Cross-Generational Sex: Risks and Opportunities. Briefs. USAID.
[25] Luke, N. (2003) Age and Economic Asymmetries in Sexual Relationships of Adolescents Girls on Sub-Saharan Africa. Studies in Family Planning, 34, 67-86.
http://dx.doi.org/10.1111/j.1728-4465.2003.00067.x
[26] Luke, N. and Kurz, K.M. (2002) Cross-Generational and Transactional Sexual Relations in Sub-Saharan Africa. Pop Services International, Washington DC.
[27] Kelly, R.J., Gray, R.H., Sewankambo, N.K., Serwadda, D., Wabwire-Mangen, F., Lutalo, T., et al. (2003) Age Differences in Sexual Partners and Risk of HIV-1 Infections in Rural Uganda. JAIDS Journal of Acquired Immune Deficiency Syndromes, 32, 446-457.
http://dx.doi.org/10.1097/00126334-200304010-00016
[28] Gregson, S., Nyamukapa, C.A., Garnett, G.P., Mason, P.R., Zhuwau, T., Caraël, M., et al. (2002) Sexual Mixing Patterns and Sex-Differentials in Teenage Exposure to HIV Infection in Rural Zimbabwe. The Lancet, 359, 1896-1903.
[29] Kanku, T. and Mash, R. (2010) Attitude, Perception and Understanding amongst Teenagers Regarding Teenage Pregnancy Sexuality and Contraception in Tuang South Africa. Form Preact, 52, 563-572
[30] Côté, A., Sobela, F., Dzolcoto, A., Nzambi, K., Asamoah-Adu, C., Labbé, A.C., et al. (2004) Transactional Sex Is the Driving Face in the Dynamics of HIV in Accra, Ghana. AIDS, 18, 917-925.
http://dx.doi.org/10.1097/00002030-200404090-00009
[31] Ilika, A. and Igwegbe, A. (2004) Unintended Pregnancy among Unmarried Adolescents and Young Women in Anambra State, South East Nigeria. African Journal of Reproductive Health, 8, 92-102.
http://dx.doi.org/10.2307/3583396
[32] Moore, A., Biddlecom, A. and Zulu, E. (2007) Prevalence and Meanings of Exchange of Money or Gifts for Sex in Unmarried Adolescent Sexual Relationships in Sub-Saharan Africa. African Journal of Reproductive Health, 11, 1-19.
[33] Meelar, S.D. and Calves, A. (1997) Man Girl Friends, Girl Friends, Marriage and Money: The Society Context of HIV Risk Behavior in Sub-Saharan Africa. Health Transition Review, 7.
[34] Luke, N. (2003) Age and Economic Asymmetries in the Sexual Relationships of Adolescent Girls in Sub-Saharan Africa. Studies in Family Planning, 34, 67-86.
http://dx.doi.org/10.1111/j.1728-4465.2003.00067.x
[35] Masvawure, T. (2010) “I Just Need to Be Freshly on Campus”: Female Students and Transactional Sex at a University in Zimbabwe. Culture, Health and Sexuality, 12, 857-870.
http://dx.doi.org/10.1080/13691050903471441
[36] Durojaiye, O.C. (2011) Knowledge, Attitude and Practice of HIV/AIDS. Behavioral Change among Tertiary Education Students in Lagos, Nigeria. Annals of Tropical Medicine & Public Health, 4, 18-24.
[37] Unuigbe, I.E. and Ogbeide, O. (1999) Sexual Behavior and Perception of AIDS among Adolescents in Benin City, Nigeria. African Journal of Reproductive Health, 3, 39-44.
http://dx.doi.org/10.2307/3583227
[38] Morhason-Bello, I.O., Oladokan, A., Enakpene, C.A., Fabanwo, A.O., Obisekan, K.A. and Ojengbede, O.A. (2008) Sexual Behavior of In-School Adolescents in Ibadan, South-West Nigeria. African Journal of Reproductive Health, 12, 89-97.
[39] Owoaje, E.T. and Uchendu, O.C. (2009) Sexual Risk Behavior of Street Youth in South-West Nigeria. East African Journal of Public Health, 6, 274-279.
[40] Dare, O.O., Oladepo, O., Cleland, J.G. and Badru, O.B. (2001) Reproductive Health Needs of Young Persons in Markets and Motor Parks in South-West Nigeria. African Journal of Medicine and Medical Sciences, 30, 199-205
[41] Federal Ministry of Health (2006) National HIV/AIDS and Reproductive Health Survey 2005. Federal Ministry of Health, Abuja, Nigeria.
[42] Santelli, J.S., Brener, N.D., Cowry, R. BhaH A. and Zabin, L.S. (1998) Multiple Sexual Partners among U.S. Adolescents and Young Adults. Family Planning Perspectives, 30, 271-275.
http://dx.doi.org/10.2307/2991502
[43] Bamidele, J.O., Abodunrin, O.L. and Adebimpe, W.O. (2009) Sexual Behaviour and Risk of HIV/AIDS among Adolescent in Public School in Osogbo, Osun State, Nigeria. International Journal of Adolescent Medicine and Health, 2, 387-394.
[44] National Population Commission (2008) Reports on 2008 Population Census in Nigeria.
[45] Madalla, L.S. (2003) Transactional Sex and the Pursuit of Modernity. Social Dynamics, 29, 213-233.
[46] WHO (2008) Adolescent Pregnancy: Document. WHO, Geneva.
[47] WHO. Millennium Development Goal 6: Combat HIV/AIDS, Malaria and Other Diseases.
[48] UNAIDS (2009) Sub-Saharan AIDS Epidemic. Update.
http://data.unaids.org/pub/facts/2009/20091124_FS_SSAen.pdf