Dr. Nina Dragićević is a professor in Pharmaceutical technology at the Department of Pharmacy at the Singidunum University in Belgrade, Serbia. She earned her master’s degree at the University of Belgrade, Faculty of Pharmacy, in 1999 and subsequently earned a Magister Degree and a PhD (summa cum laude, Dr. rer. nat.) in Pharmaceutical technology from the University of Belgrade and the Friedrich-Schiller University Jena, Germany, respectively. Before her employment at the University Singidunum, Dr. Dragićević worked as an accredited specialist in Pharmaceutical technology in the state pharmaceutical chain Apoteka "Beograd" in Belgrade. From 2007 to 2013 she was responsible for the preparation of compounded drugs for different routes of administration in pharmacies of Apoteka "Beograd", and in 2013 she was appointed director of the Production Department in the same company. She has published in a variety of international journals and she is editor of six books. Professor Howard I. Maibach, Ph.D. is currently serving as Professor of Dermatology at the University of California, San Francisco. He earned his MD from Tulane University, New Orleans, LA in 1955. Later he served in faculty positions in various levels at the UCSF. Dr. Maibach has over 2,520 published manuscripts. He has been on the editorial board of more than 30 scientific journals and is a member of 19 professional societies including the American Academy of Dermatology, San Francisco Dermatological Society and the Internal Commission on Occupation Health.