Gravimetric Method for in Vitro Calibration of Skin Hydration Measurements. - Ørjan Grøttem Martinsen; Sverre Grimnes; Jon Kerr Nilsen; Christian Tronstad; Wooyoung Jang; Hongsig Kim; Kunsoo Shin; Majid Naderi; FrankThielmann (IEEE Trans. Biomed. Eng., 2008)