P Patient, problem, population I ‑ Intervention, prognostic factor, exposure C ‑ Comparison O ‑ Outcome Continue Reading: https://bit.ly/3igMAQ4 For our services: https://pubrica.com/services/research-services/systematic-review/ Why Pubrica: When you order our services, We promise you the following – Plagiarism free | always on Time | 24*7 customer support | Written to international Standard | Unlimited Revisions support | Medical writing Expert | Publication Support | Biostatistical experts | High-quality Subject Matter Experts.   Contact us:      Web: https://pubrica.com/  Blog: https://pubrica.com/academy/  Email: [email protected]  WhatsApp : +91 9884350006  United Kingdom: +44-161818635