1. Upper extremity disorders: frequency, impact, and cost;Kelsey,1997
2. Time off work after hand injury;Johns;Injury,1981
3. Phalangeal fractures of the hand: an analysis of gender and age-related incidence and aetiology;de Jonge;J Hand Surg,1994
4. National hospital ambulatory medical care survey: 1998 emergency department summary.;McCaig,2000
5. National hospital ambulatory medical care survey, 1998.;US Dept of Health and Human Services, National Center for Health Statistics,2000