What does PTR stand for?
PTR stands for "Perinatal Trials Registry"
How to abbreviate "Perinatal Trials Registry"?
"Perinatal Trials Registry" can be abbreviated as PTR
What is the meaning of PTR abbreviation?
The meaning of PTR abbreviation is "Perinatal Trials Registry"
What does PTR mean?
PTR as abbreviation means "Perinatal Trials Registry"
