I have visited Lab for Bioinformatics and Computational Genomics at  School of Informatics, Computing, and Engineering, Indiana University Bloomington, IN, USA led by  Prof. Cenk Sahinalp in August, 2017. I gave a talk entitled An Ambiguous Coding Scheme To Achieve Data Security with Less Encryption in Department of Computer Science colloquia seminers. Thanks a lot for the hospitality and the sincere atmosphere.