Trial design
WEST
In the Pubertal Replacement in Boys Study (PRIBS), boys aged 14–16 years in West Sweden with pubertal delay were randomized in a parallel study to TE or TU for pubertal progression. Inclusion criteria were morning testosterone levels of 0.5–3 nmol/L and testicular volume ≤6 ml. Between June 2014 and Nov 2019, 27 boys were included.