(4-traders.com) ZURICH (Reuters) - Adecco, the world's biggest staffing group, has acquired privately held outplacement firm Mullin International, the Swiss company said on Tuesday, providing no financial terms.http://www.4-traders.com/ADECCO-GROUP-9365001/news/Adecco-buys-career-transition-firm-Mullin-25215904/?utm_medium=RSS&utm_content=20171003