Soon after customers arrive at Mozzeria for the first time, they notice something's different about the restaurant: Virtually every staffer is deaf.

Owners Russ and Melody Stein are also deaf, and have run their San Francisco restaurant since 2011. The business is thriving because customers love the food and the Steins have overcome obstacles deaf people can face when they become small business owners -- particularly lingering stereotypes and prejudice, and fewer resources than hearing entrepreneurs have.