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Retrospective cohort versus case–control study - A comment on chronic obstructive pulmonary disease and low bone mass: A case–control study
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Medknow Publications & Media Pvt Ltd
2015
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4372889/ https://www.ncbi.nlm.nih.gov/pubmed/25814820 http://dx.doi.org/10.4103/0970-2113.152677 |