SINGAPORE, SINGAPORE--(Marketwired - April 17, 2013) - In his Market Brief of The Week for 15 April, leading global foreign exchange trader, educator and author Mario Sant Singh - whose views are widely sought after in the Forex industry, focuses on USD losses and economic seasonality fears, and a stronger Yen. China's GDP unexpectedly slowed in the first quarter to a 7.7% YoY growth, indicating that the nation's recovery from 4Q last year lost momentum.