Maternal outcomes by quartile of BMI change.

<p>Maternal outcomes by quartile of BMI change.</p

Periconceptional weight change in the intervention and control group.

<p>Periconceptional weight change in the intervention and control group.</p

Flowchart of the analysis.

<p>Flowchart of the analysis.</p

Baseline characteristics of women according to weight change quartile.

<p>Baseline characteristics of women according to weight change quartile.</p