def start(self):
    self._watcher_thread.start()
Fetches the list of cancer studies currently in the database.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/devappserver2/mtime_file_watcher.py/MtimeFileWatcher.start--crossover with--dataset/ETHPy150Open CGATOxford/cgat/CGAT/CBioPortal.py/CBioPortal.getCancerStudies