Mangel AW, Fehnel SE. End points in irritable bowel syndrome. Expert Rev Gastroenterol Hepatol. 2011 Jun 1;5(3):293-5.
Dreyer NA, Loughlin JE, Rothman KJ. Epidemiologic safety surveillance of cellular telephones in the US. Radiat Prot Dosimetry. 1999 Jun;83(1):159-63.
Fleming AD, Palka P, McDicken WN, Fenn LN, Sutherland GR. Verification of cardiac Doppler tissue images using grey-scale M-mode images. Ultrasound Med Biol. 1996 Jan 1;22(5):573-81. doi: 10.1016/0301-5629(95)02065-9
Fleming AD, McDicken WN, Sutherland GR, Hoskins PR. Assessment of colour Doppler tissue imaging using test-phantoms. Ultrasound Med Biol. 1994 Jan 1;20(9):937-51. doi: 10.1016/0301-5629(94)90053-1