Is that 20/30?: You may have copied that incorrectly. 20/30 is standard nomenclature. Rb283432.
Answered 9/19/2017
4.6k views
10 doctors weighed in across 2 answers
9 doctors weighed in across 4 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question