The tool was made possible with the help of mygene.info API.
Please visit mygene.info/v2/api/ for bulk queries.
Also you can download python package from https://pypi.python.org/pypi/mygene.
Wu C, MacLeod I, Su AI (2013) BioGPS and MyGene.info: organizing online, gene-centric information. Nucl. Acids Res. 41(D1): D561-D565.
This tool is developed by Gaurav Panchal