Haemoglobin Levels of Adolescent Girls Aged 11-19 Years in North Sumatera are Correlated with Socio-Economic Status and Menstrual Cycle Duration

Sri Lestari, Dina Keumala Sari, IstiIlmiati Fujiati, Sake Juli Martina and Nur Hidayah Nasution

Pakistan Journal of Nutrition 19 ( 3 ): 122 - 126 , 2020