16th annual meeting of the Society of Perinatal Obstetricians : February 4-10, 1996, Kamuela, Hawaii Vol. 174 No. 1, Part 2, Suppl. 1996. St. Louis : Mosby-Year Book, 1996. s. 23, 303-524   [1, z toho voľných 0, prezenčne 1]