[1] Univ New Mexico, Hlth Sci Ctr, Dept Obstet & Gynecol, Albuquerque, NM 87131 USA
[2] Univ New Mexico, Hlth Sci Ctr, Dept Pathol, Albuquerque, NM 87131 USA
[3] Univ New Mexico, Hlth Sci Ctr, Dept Cell Biol & Physiol, Albuquerque, NM 87131 USA
[4] Univ New Mexico, Hlth Sci Ctr, Canc Res & Treatment Ctr, Albuquerque, NM 87131 USA
[5] Univ New Mexico, Dept Math, Albuquerque, NM 87131 USA
[6] Univ Colorado, Hlth Sci Ctr, Dept Pathol, Denver, CO 80202 USA