Scientists at Israel’s Ben-Gurion University and Soroka Medical Center have developed a new non-invasive method to detect the breast cancer biomarker early and accurately. They analyzed breath using electronic nose gas sensors, and urine using gas-chromatography mass spectrometry.
http://nocamels.com/2018/04/israeli-scientists-breast-cancer-new-method/
https://www.sciencedirect.com/science/article/pii/S0010482518300775