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Brief Article
Factors affecting response rates to mailed preoperative surveys among arthroplasty patients 
Wenbao Wang, Jeffrey A Geller, Abraham Kim, Todd A Morrison, Jung Keun Choi, William Macaulay 
World J Orthop 3(1):1-4. Published online Jan 18, 2012. doi: 10.5312/wjo.v3.i1.1
Analyses of possible risk factors for subacromial impingement syndrome 
Boonsin Tangtrakulwanich, Anucha Kapkird 
World J Orthop 3(1):5-9. Published online Jan 18, 2012. doi: 10.5312/wjo.v3.i1.5