April 01, 1964 article Expert Committee on Biological Standardization The American Journal of the Medical Sciences DOI: 10.1097/00000441-196404000-00041 OpenAlex Authors 0 Author list not loaded yet. Cited by 1 stored of 99 Search Sort Most cited Newest Oldest Patent citations Title Any typearticle review book-chapter conference-paper preprint dissertation book dataset other Any fieldAgricultural and Biological Sciences Arts and Humanities Biochemistry, Genetics and Molecular Biology Business, Management and Accounting Chemical Engineering Chemistry Computer Science Decision Sciences Dentistry Earth and Planetary Sciences Economics, Econometrics and Finance Energy Engineering Environmental Science Health Professions Immunology and Microbiology Materials Science Mathematics Medicine Neuroscience Nursing Pharmacology, Toxicology and Pharmaceutics Physics and Astronomy Psychology Social Sciences Veterinary Open access Human challenge trial workshop: Focus on quality requirements for challenge agents, Langen, Germany, October 22, 2019 2020 Biologicals article Medicine Ethics in Clinical Research 13 citations 1 result References 0