It’s been a nail-biting time for members of Aezon Health, the team of undergraduate students from the Whiting and Krieger schools. The 19-member team is one of seven still in the final round of Qualcomm’s $10 million Tricorder XPRIZE competition. The three-year contest challenged teams across the globe to develop hand-held, consumer-friendly, Star Trek- style “tricorders” able to nimbly diagnose 15 medical conditions. Consumers have been testing the contestants’ devices since last spring. The contest has been extended through 2017.