1. WHO Expert Committee on Biological Standardization. Recommendations for the Preparation, Characterization and Establishment of International and Other Biological Reference Standards (Revised 2004). World Health Organization
2. WHO Technical Report Series, No. 932, 2006. ECB Text 001-138 (who.int).
3. Comparison of adaptive and innate immune responses induced by licensed vaccines for Human Papillomavirus;Herrin;Hum Vaccin Immunother,2014
4. HPV serology laboratory. Frederick National Laboratory. Accessed March 1, 2022. Available from: https://frederick.cancer.gov/research/vaccine-immunity-and-cancer-directorate/serology- laboratory/hpv-operating-procedures.
5. World Health Organization. Manual for the preparation of secondary reference materials for in vitro diagnostic assays designed for infectious disease nucleic acid or antigen detection: calibration to who international standards. Published online 2016. Available from: https://www.who.int/biologicals/expert_committee/WHO_Manual_Calibration_of_seconda ry_standards_mn.pdf?ua=1.