Parents' Attitude and Practices Regarding the Use of Over-the-Counter Medicines to Their Children in Riyadh, Kingdom of Saudi Arabia Kamel Alenazi1, Aghadir Al-ahmari2, Khulud Alhumaidi2, Shaya Alotaibi2, Sultana Almutairi2, Mohammed Alsuhaibani3, Jamal Omer4 and Hassan Al-shehri1*