Before revision: (1995) " Meta-analysis: statistical alchemy for the 21st century", Journal of Clinical Epidemiology 1995 Jan;48(1):71-9 Keynes J. M., (1939) 'Professor Tinbergen's method', Economic Journal '' , 49, 558-568.
After revision: (1995) " Meta-analysis: statistical alchemy for the 21st century", Journal of Clinical Epidemiology 1995 Jan;48(1):71-9 Keynes J. M., (1939) 'Professor Tinbergen's method', Economic Journal , 49, 558-568.