Jørn Müller

TL;DR: The growing number of reports demonstrating that common environmental contaminants and natural factors possess estrogenic activity presents the working hypothesis that the adverse trends in male reproductive health may be, at least in part, associated with exposure to estrogenic or other hormonally active environmental chemicals during fetal and childhood development.

TL;DR: There was a significant variation in serum IGF-I levels with age within a given Tanner stage of puberty in addition to the well known increase with increasing age or pubertal stage, which cannot be separated into simple additive components when studying 1030 children in a cross-sectional design.

TL;DR: Based on evidence from morphological and histochemical studies and from clinical experience, the following hypotheses are proposed: carcinoma-in-situ germ cells are malignant gonocytes; the pathogenesis of classical and spermatocytic seminoma are unrelated.

TL;DR: In this paper, a specific and sensitive RIA was developed that allowed the accurate measurement of low leptin levels in young lean children, and leptin proved to be a comparatively stable protein under common conditions of blood sampling and storage.

TL;DR: Age, sex, height, BMI, and pubertal maturation were all important factors in determining the circulating levels of IGFBP-3, whereas IGF-I levels were unaffected by BMI.