Factors associated with age at menarche, menstrual knowledge, and hygiene practices among schoolgirls in Sharjah, UAE oleh Amena Mohamad Ali, Sara Alaaeldin Bashier, Shahad Ahmed, Hiyam Husam Eddin Subeh, Rania Mahmoud Taha, Samah Ali Ibrahim, Rahaf Fouad Altelbani, Nada Ayman Yakout, Asiyeh Ebrahim Davoodi, Amna Khalid, Asima Karim