STOPP criteria and Beers' criteria for potentially inappropriate medications (PIMs), and START criteria for potential prescribing omissions (PPOs)
A short scale for measuring attitudes towards the doctor-patient relationship: psychometric properties and measurement invariance of the German Patient-Practitioner-Orientation Scale (PPOS-D6)
Trends In Second-Generation PPOs
The PPO advantage.
Silent PPOs.
The evolution of PPOs.
Distribution, Localization, and Structure of Plant Polyphenol Oxidases (PPOs)
The ABCs of PPOs.