Ian A. Newnham

Periodontal disease: a potential modifiable risk factor limiting conception.

C. Pennell, R. Hart, D. Doherty, 2012, Human reproduction.

Treatment of Periodontal Disease During Pregnancy: A Randomized Controlled Trial

C. Pennell, D. Doherty, Colleen Ball, 2009, Obstetrics and gynecology.