Cargando…
The increasing trend of observational studies in clinical research: Have we forgotten and started defying the hierarchy?
| Autores principales: | , , |
|---|---|
| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Wolters Kluwer - Medknow
2021
|
| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7989480/ https://www.ncbi.nlm.nih.gov/pubmed/33776107 http://dx.doi.org/10.4103/ija.IJA_176_21 |