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| English | Russian |
| Co-ordinating investigator | Исследователь-координатор (Камакина) |
| investigator masked | маскированное для исследователя (исследование wolferine) |
| investigator's brochure | брошюра исследователя (The Investigator's Brochure (IB) is a comprehensive document summarizing the body of information about an investigational product ("IP" or "study drug"). wiki Alexander Demidov) |