The revolving door penalty: is it a matter of time?

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Backtrace:

File: /var/www/html/index.php
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Function: require_once

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File: /var/www/html/index.php
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Function: require_once

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Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 197
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 271
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
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Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
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Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

The revolving door penalty: is it a matter of time? | LitMetric