What do soccer players Jamal Musiala, Arda Guler and Cristiano Ronaldo have in common? Not only are they shining for their respective nations in Germany; they were each born in February. Researchers at the University of Strathclyde have found that this is not a coincidence. What do soccer players Jamal Musiala, Arda Guler and Cristiano Ronaldo have in common? Not only are they shining for their respective nations in Germany; they were each born in February. Researchers at the University of Strathclyde have found that this is not a coincidence. Other Social Sciences Phys.org – latest science and technology news stories