Can mathematicians with experience answer this?

The results from a survey show show that the favorite magazines for men are 'Sports Illustrated', 'GQ',and 'Consumer Reports'. Of the men surveyed, 13 subscibed to GQ only, 28 to sports Illustrrated only, and 19 to Consumer Reports only. The survey shows that of the men who take two magazines only, 17 take both GQ and Sports Illustrated, 21 take both Sports Illustrated and Consumer Reports, and 13 take both GQ and Consumer Reports. 14 men subscribed to all three magazines. How many men were surveyed?