Patrik Guggenberger and Gitanjali Kumar, "On the Size Distortion of Tests after an Overidentifying Restrictions Pretest", Journal of Applied Econometrics, Vol. 27, No. 7, 2012, pp. 1138-1160. The empirical results in Section 6, namely Table 3, were reproduced from Tables 2-3 in the paper Luiz M. Cruz and Marcelo J. Moreira (2005). "On the Validity of Econometric Techniques With Weak Instruments: Inference on Returns to Education Using Compulsory School Attendance Laws", Journal of Human Resources, 40, 393-410. The paper did not use any data directly.