1.

S1 File -

2.

S1 File -

3.

S1 File -

1.

Fig 1 -

1.

Clinicopathological characteristics of all included patients.

1.

Clinicopathological characteristics of patients with a more aggressive subtype in additional step sections (levels 5–8) vs. the remaining patients.

1.

Overview of HE levels of the 14 patients with a more aggressive BCC component in deeper HE slides (levels 5–8).

1.

Maternal self-reported symptoms.

1.

Inclusions per participating centre.

1.

Medication use according to treatment group.

1.

Additional neonatal outcomes according to treatment group.

1.

List of serious adverse events.