Picterus - We can thank the nurse sister Jean Ward for the invention of phototherapy back in 1956. She used to take newborns out in the fresh air and expose them to
![Lady Jean Ward. Husband Sir John H. Ward, son of William Ward, 1st Earl of Dudley. | John ward, Whitelaw, Ward Lady Jean Ward. Husband Sir John H. Ward, son of William Ward, 1st Earl of Dudley. | John ward, Whitelaw, Ward](https://i.pinimg.com/originals/51/40/0a/51400aad4a786f16a5a15d3f25bb205a.jpg)
Lady Jean Ward. Husband Sir John H. Ward, son of William Ward, 1st Earl of Dudley. | John ward, Whitelaw, Ward
![Sister Jean Ward, phototherapy, and jaundice: a unique human and photochemical interaction | Journal of Perinatology Sister Jean Ward, phototherapy, and jaundice: a unique human and photochemical interaction | Journal of Perinatology](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fjp.2015.56/MediaObjects/41372_2015_Article_BFjp201556_Fig1_HTML.jpg)