Vutyavanich, T.; Uttavichai, C.; Pongsuthirak, P.; Oranratnachai, A.; Ittipunkul, W.; Piromlertamorn, W. Preliminary Experiences with IVF & ET at Maharaj Nakorn Chiang Mai Hospital. Thai J Obstet Gynaecol 1992, 4, 23-32.