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does not extend to any other kind of copying by any means, in any form, and for any purpose other than private research use. The publisher assumes no responsibility for any statements of fact or opinion expressed in the published papers. The appearance of advertising in this journal does not constitute an endorsement or approval by the publisher, the editor-in-chief, or the editorial board of the quality or value of the product/service advertised or of the claims made for it by itsdoi:10.9738/0020-8868-98.2.i pmid:23701158 pmcid:PMC3723173 fatcat:mdqdvzefpbbbnnooaqdc7io5ea