His fellow revolutionary Leonid Krasin wrote to his wife that "Bogdanov seems to have become 7, no, 10 years younger after the operation".
革命家仲間のレオニード・クラスニンは妻に宛てて、「ボグダーノフは例の治療の後で、7歳、いや10歳若返ったように見える」と書き送っている。