What does HDBR stand for?
HDBR stands for "head-down bed rest"
How to abbreviate "head-down bed rest"?
"head-down bed rest" can be abbreviated as HDBR
What is the meaning of HDBR abbreviation?
The meaning of HDBR abbreviation is "head-down bed rest"
What does HDBR mean?
HDBR as abbreviation means "head-down bed rest"
