Annop Sooksawat, Prawit Janwantanakul*, Tewin Tencomnao and Praneet Pensri
* Corresponding author: Prawit Janwantanakul prawit.j@chula.ac.th
BMC Musculoskeletal Disorders 2013, 14:29 doi:10.1186/1471-2474-14-29
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