Download or read book Letters to Gabriel written by Karen Garver Santorum and published by . This book was released on 1998 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of letters by the author to her unborn child with an abnormality known as "posterior urethral valve", a defect in which a valve in the urinary system does not open. As a result, the baby is unable to empty fluid from the bladder to the amniotic sac.