[Migrants and refugees queue for food at a makeshift camp at the Greek-Macedonian border near the village of Idomeni]The number of migrants entering Germany from Austria fell more than seven times in March to below 5,000 due to the introduction of border controls by countries along the Balkans migrant route, an interior ministry official said on Saturday. Chancellor Angela Merkel is under pressure to deliver on a promise to slow arrivals of migrants and refugees after 1.1 million people entered Europe's biggest economy last year, triggering fears about the cost and how to integrate them. Austria is the main entry point for migrants crossing into Germany.