PT - JOURNAL ARTICLE AU - K M Khan TI - Mid-year review: physical inactivity universally accepted as the biggest public health problem of the 21st century, shoulder exam challenges, and progress against the scourges of anterior knee pain and ACL injuries AID - 10.1136/bjsm.2009.062794 DP - 2009 Jul 01 TA - British Journal of Sports Medicine PG - 469--470 VI - 43 IP - 7 4099 - http://bjsm.bmj.com/content/43/7/469.short 4100 - http://bjsm.bmj.com/content/43/7/469.full SO - Br J Sports Med2009 Jul 01; 43