Key points are not available for this paper at this time.
Cyrus R. Mehta, Nitin R. Patel, Robert Gray, Computing an Exact Confidence Interval for the Common Odds Ratio in Several 2 × 2 Contingency Tables, Journal of the American Statistical Association, Vol. 80, No. 392 (Dec., 1985), pp. 969-973
Mehta et al. (Sun,) studied this question.