Val Ball
- The problems and limitations of cohort studiesBy Warren Lenney, Francis J. Gilchrist, Aphrodite Kouzouna, Anand D. Pandyan and Val BallWarren Lenney1University Hospital of North Staffordshire, Stoke on Trent, and2Institute of Science and Technology in Medicine, andFrancis J. Gilchrist1University Hospital of North Staffordshire, Stoke on Trent, and2Institute of Science and Technology in Medicine, andAphrodite Kouzouna3School of Health Rehabilitation, Keele University, Keele, UKAnand D. Pandyan3School of Health Rehabilitation, Keele University, Keele, UKVal Ball3School of Health Rehabilitation, Keele University, Keele, UK
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