Objectives 1. Understand the design, implementation and use of a stack, queue, and binary search tree class container. 2. Gain experience implementing applications using layers of increasing complexity and complex data structures. 3. Gain further experience with object-oriented programming concepts, especially templates and iterators. Overview In this project you need to design and implement an Emergency Room Patients Healthcare Management System (ERPHMS) that uses stacks, queues, linked lists, and binary search tree ( in addition you can use all what you need from what you have learned in this course) The system should be able to keep the patient's records, visits, turns, diagnostics, treatments, observations, Physicians records, etc. It should allow you to 1. Add new patient's records. 2. Add new Physicians records 3. Find patients, physicians 4. Find the patients visit history 5. Display Patients registered in the system 6. Print invoice that includes details of the visit and cost of each service done. Deliverables: You are required to hand in the following items: 1. Design document that includes all classes, their relation, and hierarchy diagram. 2. Complete code