Global Pneumonia Therapeutics Market Assessment, By Product [Drugs, Vaccine, Oxygen Therapy], By Infection Type [Hospital-acquired Pneumonia, Community-acquired Pneumonia, Ventilator-associated Pneumonia], By Route of Administration [Oral, Parenteral, Others], By Age Group [Pediatric, Adult, Geriatric], By Distribution Channel [Hospitals, Homecare, Specialty Clinics, Others], By Region, Opportunities and Forecast, 2017-2031F