Robert Bjerknes

Affiliations

Department of Clinical Science, University of Bergen, Bergen, Norway.
Department of Pediatrics, Haukeland University Hospital, Bergen, Norway.

Publications (12)

Testicular Ultrasound to Stratify Hormone References in a Cross-Sectional Norwegian Study of Male Puberty.

The Journal of clinical endocrinology and metabolism

Avec: André Madsen , Ninnie B Oehme , Mathieu Roelants , Ingvild S Bruserud , Geir Egil Eide , Kristin Viste , Robert Bjerknes , Bjørg Almås , Karen Rosendahl , Jørn V Sagen , Gunnar Mellgren , Petur B Juliusson

Hormone References for Ultrasound Breast Staging and Endocrine Profiling to Detect Female Onset of Puberty.

The Journal of clinical endocrinology and metabolism

Avec: Andre Madsen , Ingvild S Bruserud , Bjørn-Erik Bertelsen , Mathieu Roelants , Ninnie Helen Bakken Oehme , Kristin Viste , Robert Bjerknes , Bjørg Almås , Karen Rosendahl , Gunnar Mellgren , Jørn V Sagen , Petur B Juliusson

Reference data for testicular volume measured with ultrasound and pubic hair in Norwegian boys are comparable with Northern European populations.

Acta paediatrica (Oslo, Norway : 1992)

Avec: Ninnie Helen Bakken Oehme , Mathieu Roelants , Ingvild Saervold Bruserud , Andre Madsen , Geir Egil Eide , Robert Bjerknes , Karen Rosendahl , Petur B Juliusson

A family-oriented intervention programme to curtail obesity from five years of age had no effect over no intervention.

Acta paediatrica (Oslo, Norway : 1992)

Avec: Hilde Mjell Donkor , Jacob Holter Grundt , Petur Benedikt Júlíusson , Geir Egil Eide , Jørgen Hurum , Robert Bjerknes , Trond Markestad

Low BMI, but not high BMI, influences the timing of puberty in boys.

Andrology

Avec: Ninnie Helen Bakken Oehme , Mathieu Roelants , Ingvild Saervold Bruserud , Andre Madsen , Robert Bjerknes , Karen Rosendahl , Petur B Juliusson

References for Ultrasound Staging of Breast Maturation, Tanner Breast Staging, Pubic Hair, and Menarche in Norwegian Girls.

The Journal of clinical endocrinology and metabolism

Avec: Ingvild Særvold Bruserud , Mathieu Roelants , Ninnie Helén Bakken Oehme , Andre Madsen , Geir Egil Eide , Robert Bjerknes , Karen Rosendahl , Petur B Juliusson

Levels of per- and polyfluoroalkyl substances (PFAS) in Norwegian children stratified by age and sex - Data from the Bergen Growth Study 2.

International journal of hygiene and environmental health

Avec: Ingvild Halsør Forthun , Mathieu Roelants , Line Småstuen Haug , Helle Katrine Knutsen , Lawrence M Schell , Astanand Jugessur , Robert Bjerknes , Azemira Sabaredzovic , Ingvild Særvold Bruserud , Petur Benedikt Juliusson

Norwegian children and adolescents in blended families are at risk of larger one-year BMI increments.

Acta paediatrica (Oslo, Norway : 1992)

Avec: Hege Kristiansen , Mathieu Roelants , Robert Bjerknes , Petur B Juliusson

Psychological health in preschool children with underweight, overweight or obesity: a regional cohort study.

BMJ paediatrics open

Avec: Hilde Mjell Donkor , Helene Toxe , Jørgen Hurum , Robert Bjerknes , Geir Egil Eide , Petur Juliusson , Trond Markestad

Reference Curves for Pediatric Endocrinology: Leveraging Biomarker Z-Scores for Clinical Classifications.

The Journal of clinical endocrinology and metabolism

Avec: Andre Madsen , Bjørg Almås , Ingvild S Bruserud , Ninnie Helen Bakken Oehme , Christopher Sivert Nielsen , Mathieu Roelants , Thomas Hundhausen , Marie Lindhardt Ljubicic , Robert Bjerknes , Gunnar Mellgren , Jørn V Sagen , Pétur B Juliusson , Kristin Viste

Deep phenotyping of pubertal development in Norwegian children: the Bergen Growth Study 2.

Annals of human biology

Avec: Petur B Juliusson , Ingvild S Bruserud , Ninnie Helen Bakken Oehme , Andre Madsen , Ingvild H Forthun , Melissa Balthasar , Karen Rosendahl , Kristin Viste , Astanand Jugessur , Lawrence M Schell , Robert Bjerknes , Mathieu Roelants

Exposure to Per- and Polyfluoroalkyl Substances and Timing of Puberty in Norwegian Boys: Data from the Bergen Growth Study 2.

Environmental science & technology

Avec: Ingvild Halsør Forthun , Mathieu Roelants , Helle Katrine Knutsen , Line Småstuen Haug , Nina Iszatt , Lawrence M Schell , Astanand Jugessur , Robert Bjerknes , Ninnie B Oehme , Andre Madsen , Ingvild Særvold Bruserud , Petur Benedikt Juliusson

Réseau de co-auteurs

Mathieu Roelants 10 collaborations

Petur B Juliusson 7 collaborations

Andre Madsen 7 collaborations

Karen Rosendahl 6 collaborations

Geir Egil Eide 5 collaborations

Ninnie Helen Bakken Oehme 5 collaborations

Ingvild S Bruserud 4 collaborations

Kristin Viste 4 collaborations

Bjørg Almås 3 collaborations

Jørn V Sagen 3 collaborations

Gunnar Mellgren 3 collaborations

Ingvild Særvold Bruserud 3 collaborations

Lawrence M Schell 3 collaborations

Astanand Jugessur 3 collaborations

Ninnie B Oehme 2 collaborations

Ingvild Saervold Bruserud 2 collaborations

Hilde Mjell Donkor 2 collaborations

Jørgen Hurum 2 collaborations

Trond Markestad 2 collaborations

Ingvild Halsør Forthun 2 collaborations

Line Småstuen Haug 2 collaborations

Helle Katrine Knutsen 2 collaborations

Petur Benedikt Juliusson 2 collaborations

André Madsen 1 collaboration

Bjørn-Erik Bertelsen 1 collaboration

Jacob Holter Grundt 1 collaboration

Petur Benedikt Júlíusson 1 collaboration

Ninnie Helén Bakken Oehme 1 collaboration

Azemira Sabaredzovic 1 collaboration

Hege Kristiansen 1 collaboration

Helene Toxe 1 collaboration

Petur Juliusson 1 collaboration

Christopher Sivert Nielsen 1 collaboration

Thomas Hundhausen 1 collaboration

Marie Lindhardt Ljubicic 1 collaboration

Pétur B Juliusson 1 collaboration

Ingvild H Forthun 1 collaboration

Melissa Balthasar 1 collaboration

Nina Iszatt 1 collaboration