About the Authors
- Ivailo Alexiev Ivanov
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* E-mail: Ivoalexiev@yahoo.com
Affiliation National Reference Laboratory of HIV, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
- Danail Beshkov
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Affiliation National Reference Laboratory of HIV, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
- Anupama Shankar
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Affiliation Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- Debra L. Hanson
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Affiliation Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- Dimitrios Paraskevis
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Affiliation National Retrovirus Reference Center, Department of Hygiene Epidemiology and Medical Statistics, Medical School, University of Athens, Athens, Greece
- Viara Georgieva
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Affiliation National Reference Laboratory of HIV, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
- Lyudmila Karamacheva
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Affiliation National Reference Laboratory of HIV, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
- Hristo Taskov
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Affiliation National Reference Laboratory of HIV, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
- Tonka Varleva
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Affiliation Program “Prevention and Control of HIV/AIDS”, Ministry of Health, Sofia, Bulgaria
- Ivaylo Elenkov
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Affiliation Hospital for Infectious and Parasitic Diseases, Sofia, Bulgaria
- Mariana Stoicheva
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Affiliation Medical University, Plovdiv, Bulgaria
- Daniela Nikolova
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Affiliation Medical University, Clinic of Infectious Diseases, Varna, Bulgaria
- William M. Switzer
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Affiliation Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: IAI. Performed the experiments: IAI. Analyzed the data: IAI DLH WMS AS DP. Contributed reagents/materials/analysis tools: IAI LK IE MS DN DB VG HT TV DLH AS WMS. Wrote the paper: WMS DLH IAI.