The blobbogram leading this article is from a systematic review; it shows clinical trials of the use of corticosteroids to hasten lung development in pregnancies where a baby is likely to be born prematurely. Long after there was enough evidence to show that this treatment saved babies' lives, the evidence was not widely known, the treatment was not widely used, and further research was done into the same question. After the review made the evidence better known, the treatment was used more, preventing thousands of pre-term babies from dying of infant respiratory distress syndrome.[13]