All the information, facts, statements, figures, and other data used in this presentation are collected from different internet sources and literature. The sources of data are appropriately disclosed in all the slides or in reference. The data was used for education purposes only. Also, I do not claim ownership/copyright of any image that has been obtained from the public domain and literature. I have acknowledged sources of all the information as much as possible. The educator/student can use this presentation for education/learning purposes by acknowledging the sources of the data being used in this presentation. Thank you.