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subscription/membership/fee required Atypon https://journals.sagepub.com/doi/10.1080/08897077.2019.1706695?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
HIV free resource Genetic Alliance https://www.diseaseinfosearch.org/result/9735
HIV free resource MedlinePlus Health Information https://medlineplus.gov/hiv.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31951807.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31951807/
subscription/membership/fee required Taylor & Francis https://www.tandfonline.com/doi/full/10.1080/08897077.2019.1706695
free resource Europe PubMed Central https://europepmc.org/abstract/MED/31951807
Drug Use and Addiction free resource MedlinePlus Consumer Health Information https://medlineplus.gov/druguseandaddiction.html