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...Take the quiz --Additional reporting by Xiumei Dong, Kevin Penton and Tracey Read....
...--Additional reporting by Sarah Martinson and Kevin Penton. Editing by Robert Rudinger....
...--Additional reporting by Xiumei Dong and Kevin Penton. Editing by Daniel King....
...--Additional reporting by Kevin Penton. Editing by Alex Hubbard....
...--As told to Kevin Penton. Editing by Adam LoBelia....
...--Additional reporting by Adrian Cruz, Emily Sawicki, Jack Karp, Kevin Penton, Julie Manganis and Courtney...