Regulation of androgen production in cultured human thecal cells by insulin-like growth factor I and insulin**Supported by grant no. 5987 from the Swedish Medical Research Council, Swedish Medical Society, The Medical Society of Göteborg, Kabi-Pharmacia Ltd., Nordisk Insulin Foundation, Hjalmar Svenssons Research Foundation, Swedish Society for Medical Research, and the University of Göteborg, Göteborg, Sweden.