# Measuring health-relevant businesses over 21 years: refining the National Establishment Time-Series (NETS), a dynamic longitudinal data set

> Research article (BMC Research Notes, 2015) · cited 47× · AI/ML

**Wikidata**: [openalex:W1787458695](https://www.wikidata.org/wiki/openalex:W1787458695)  
**Source**: https://4ort.xyz/entity/measuring-health-relevant-businesses-over-21-years-refining-the-national-establishment-time-series-nets-a-dynamic-longit