| Genetic and environmental factors in asthma: a population based European study | 9 |
| 11 / 2012 | 12 / 2012 | 01 / 2013 | 02 / 2013 | 03 / 2013 | 04 / 2013 | 05 / 2013 | |
| Genetic and environmental factors in asthma: a population based European study | 0 | 1 | 0 | 0 | 0 | 2 | 2 |
| 1 | Spain | 5 |
| 2 | Canada | 2 |
| 3 | United States of America | 2 |
| 1 | Barcelona | 2 |
| 2 | Las Palmas | 1 |
| 3 | Madrid | 1 |
| 4 | Seattle | 1 |
| 5 | Woodbridge | 1 |