Fig. 1From: Analysis of official deceased organ donation data casts doubt on the credibility of China’s organ transplant reformCOTRS Central Level Annual Figures Presented by Huang Jiefu in February 2017. The line of best fit, added, is a quadratic formula with a growth curve that takes the form y = ax2 + bx + c. The coefficients for the three lines and a full mathematical explanation by which the line of best fit was derived can be found in Additional file 1Back to article page