Двойное слепое (исследование)

Смотреть «ослепление».

The original document is available at https://htaglossary.net/%D0%94%D0%B2%D0%BE%D0%B9%D0%BD%D0%BE%D0%B5-%D1%81%D0%BB%D0%B5%D0%BF%D0%BE%D0%B5-%28%D0%B8%D1%81%D1%81%D0%BB%D0%B5%D0%B4%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%29