Erratum

After publication of the original article [1] it came to the publisher’s attention that there were errors in the formatting of Table five. The first Outcome ‘Emergency caesarean delivery’ was incorrectly separated by a line break. The second and third Outcomes ‘Preterm birth’ and ‘Birth type (other presentations than normal cephalic)’ were formatted on the incorrect lines. These errors have been corrected in Table 5 below.

Table 5 Odds ratiosa of birth outcomes in relation to group (symptom-free (SF), nausea only (NP), and nausea and vomiting (NVP))