The International Journal of Biostatistics. Berlin, Boston: De Gruyter. Web. Retrieved 18 May. 2013, from http://www.degruyter.com/view/j/ijb

The International Journal of Biostatistics. Berlin, Boston: De Gruyter. Retrieved 18 May. 2013, from http://www.degruyter.com/view/j/ijb

The International Journal of Biostatistics. Berlin, Boston: De Gruyter. Retrieved 18 May. 2013, from http://www.degruyter.com/view/j/ijb