What does PPI stand for?
PPI stands for "postprimary immunization"
How to abbreviate "postprimary immunization"?
"postprimary immunization" can be abbreviated as PPI
What is the meaning of PPI abbreviation?
The meaning of PPI abbreviation is "postprimary immunization"
What does PPI mean?
PPI as abbreviation means "postprimary immunization"
