• Full text available at: DOAJ Directory of Open Access Journals
• Available from 2010.
  
• Full text available at: PubMed Central
• Available from 2010 volume: 1.
  
• Full text available at: PubMed Central Open Access
• Available from 2010 volume: 1.
  
• Selected full text available at: PubMed Central Open Access
• Full text available at: Scholars Portal Journals: Open Access
• Available from 12/01/2010 volume: 1 until 01/31/2025 volume: 16.
  

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