| Study | Type of data | Exposure measurement | Outcome assessment | Adjustment |
|---|---|---|---|---|
| De Lorenzo (Controls unexposed, disease free), 2020 | retrospective cohort | Data were collected retrospectively during paediatric consultations. | Data were collected retrospectively during paediatric consultations. | None |
| De Lorenzo (Controls unexposed, sick), 2020 | retrospective cohort | Data were collected retrospectively during paediatric consultations. | Data were collected retrospectively during paediatric consultations. | None |