| Original language | English |
|---|---|
| Journal | Stata Journal |
| Volume | 14 |
| Issue number | 1 |
| Pages (from-to) | 221-225 |
| ISSN | 1536-867X |
| Publication status | Published - 2014 |
| Original language | English |
|---|---|
| Journal | Stata Journal |
| Volume | 14 |
| Issue number | 1 |
| Pages (from-to) | 221-225 |
| ISSN | 1536-867X |
| Publication status | Published - 2014 |