pls help me : Draw an ER diagram according to the following requirements: Database to manage daily medical examination and treatment in the hospital (not interested in treating inpatients): - The hospital has many doctors and nurses from different departments. Each doctor and nurse belongs to only one department - The patient when he comes to the doctor will be created a patient record if it is the first visit - Each visit will be made a medical record and assigned an initial clinic. Each visit is attended by a doctor and an assistant nurse. - The doctor may ask the patient to perform tests, x-rays, endoscopy, .... - After the results are available, the patient returns to the original clinic for the doctor to read the results and prescribe medicine if any - Patients can buy medicine in the hospital pharmacy or buy it outside

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