World Health Organization (2008). 10 Facts About Adolescent Health. http://www.who.int/features/factfiles/adolescentheaIth/facts/en/indexl.html accessed 18th October 2013

World Health Organization (1999). Programming for Adolescent Hea Ith and Development. WHO Technical Report,Series 886. http://www.who.int/maternal child adolescent/documents/trs 886/en/ accessed 3rd October 2013

Viner RM,Ozer EM, Denny 5, Marmot M, Resnick M,Fatusi A, and Curri C. (2012) Adolescence and the social determinants of health.Lancet, 379: 1641-52

UNICEF. (2011) The state of the world’s children. Adolescence: an age of opportunity. New York, USA. United Nations Children Fund

Speizer IS,Magnani RJ, Colvin CE. (2003) The effectiveness of adolescent reproductive health interventions in developing countries: a review of the evidence. Journal of Adolescent Health, 33(5):324-348

Seifu A, Fantahun M, and Worku A .(2006) Reproductive health needs of out-of-school adolescents: a cross-sectional comparative study of rural and urban areas in northwest Ethiopia. Ethiopian Journal of Development, 20(10): 10-17

Sawyer SM,Afifi RA, Bearigner LH, Blakemore SJ, Dick B, Ezech AC, and Patton GC. (2012) Adolescence: a foundation for future health.Lancet, 379:1630-1640

Regmi P, Simkhada P, Van Teijlingen ER. (2008) Sexual and reproductive health status among young peoples in Nepal: opportunities and barriers to sexual health education and services utilization. Kathmandu University Medical Journal, Vol 6, No 2,Issue 22:1-5

Ndugwa RP, Kabiru CW, Cleland J, Beguy D,Egondi T, Zulu EM, and Jessor R. (2010) Adolescent problem behavior in Nairobi’s informal settlements: applying problem behavior theory in Sub-saharan Africa.Journal of Urban Health. 88(2):5298-5317

Mmari K and Sabherwal S. (2013) A review of risk and protective factors for adolescent sexual and reproductive health in developing countries: an update. Journal of Adolescent Health, 1-11