Sivertsen, Å., Wilcox, A. J., Skjærven, R., Vindenes, H. A., Åbyholm, F., Harville, E., & Lie, R. T. (2008). Familial risk of oral clefts by morphological type and severity: Population based cohort study of first degree relatives. BMJ Publishing Group Ltd.

Sivertsen, Åse, Allen J. Wilcox, Rolv Skjærven, Hallvard Andreas Vindenes, Frank Åbyholm, Emily Harville, and Rolv Terje Lie. Familial Risk of Oral Clefts By Morphological Type and Severity: Population Based Cohort Study of First Degree Relatives. BMJ Publishing Group Ltd, 2008.

Sivertsen, Åse, et al. Familial Risk of Oral Clefts By Morphological Type and Severity: Population Based Cohort Study of First Degree Relatives. BMJ Publishing Group Ltd, 2008.