I do not think: anybody knows; the only good thing is that progression is very slow and it is frequently measured in decades.
Answered 2/17/2015
3.2k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question