[Answer] What is the name of the German scientist whose law says that the affliction known as the \u201cRoyal Disease\u201d is carried by women, but affects only men?

Step 1 : Introduction to the question "What is the name of the German scientist whose law says that the affliction known as the \u201cRoyal Disease\u201d is carried by women, but affects only men?"

...Hint :Factor VIII, IX