TY - T1 - The origin of mouth-exhaled ammonia SN - / UR - http://hdl.handle.net/10138/152832 T3 - A1 - Chen, W.; Metsala, M.; Vaittinen, O.; Halonen, L. A2 - PB - Y1 - 2014 LA - eng AB - ... VO - IS - SP - OP - KW - exhaled breath analysis; ammonia; laser spectroscopy; cavity ring-down spectroscopy; BREATH AMMONIA; SALIVARY UREA; HEMODIALYSIS; SPECTROMETRY; BACTERIA; PLASMA; SENSOR; CAVITY; CARIES; 116 Chemical sciences N1 - PP - ER -