[2] [2] Watkins P J. British Medical Journal, 2003, 7(2): 105.

[3] [3] Sanchez C I, Hornero R, Lopez M I, et al. 26th IEEE Annual International Conference on Engineering in Medicine and Biology Society, San Francisco, CA, USA: EMBC, 2004, 1: 1624.

[4] [4] Villarroel M, Ciudin A, Hernndez C, et al. World J Diabetes, 2010, 1(2): 57.

[8] [8] Sinthanayothin C, Boyce J F, Williamson T H, et al. Diabetic Medicine, 2002, 19(2): 105.

[9] [9] Meindert Niemeijer, Bram van Ginneken, Stephen R. Russell, et al. Investigative Ophthalmology & Visual Science, 2007, 48(5): 2260.

[12] [12] Usher D, Dumskyj M, Himaga M, et al. Diabetic UK Diabetic Medicine, 2004, 21(1): 84.

[13] [13] Niemeijer M, van Ginneken B, Staal J, et al. IEEE Trans. Med. Imaging, 2005, 24(5): 584.

[14] [14] Yuji Hatanaka, Toshiaki Nakagawa, Yoshinori Hayashi, et al. 30th Annual International IEEE EMBS Conference, Vancouver, British Columbia, Canada, 2008. 5429.

[15] [15] Dupas B, Walter T, Erginay A, et al. Diabetes & Metabolism, 2010, 36(3): 213.

[16] [16] Chihara E, Matsuoka T, Ogura Y, et al. Ophthalmology, 1993, 100: 1147.

[18] [18] Adams R, Bischof L. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1994, 16(6): 641.

[19] [19] Rosenman J, Roe C A, Cromartie R, et al. Int. J. Rdaiat. Oncol. Biol. Physics, 1993, 333.

[21] [21] Javitt J C, Canner J K, Frank R G, et al. Ophthalmology, 1990, 97(4): 483.