There are multiple definitions:

1. Premolar aplasia, Hyperhidrosis, and premature Canities(English)

   • also known as Böök syndrome
   • Dentistry, Pathology

2. pulmonary hypertension connection(English)

   • PAH, PAP, PVR, TPG
   • Pulmonology, Hemodynamics, Hypertension

3. primary healthcare(English)

   • low-income and middle-income countries (LMIC) have been developing innovative interventions in primary healthcare addressing local problems such as intimate partner violence
   • IPV, LMIC
   • Health care, Preventive medicine
   • https://doi.org…pen-2017-019266

4. physical health component(English)

   • COVID-19, ENO, MHC, VAS
   • Physical therapy
   • https://www.eno.org/breathe/

5. penehyclidine hydrochloride(English)

   • alleviates lung ischemia-reperfusion injury by inhibiting pyroptosis
   • I/R
   • Pulmonology, Injury, Therapeutic approaches
   • https://doi.org…890-024-03018-5