If you have not aready do so I would also suggest the Canine Intervertebral Disk Disease Prepared for The Dachshund Club of America, Inc. by Patricia J. Luttgen, DVM, MS Diplomate, American College of
Veterinary Internal Medicine, Specialty of Neurology. Denver, Colorado
FWIW dachshunds have the highest rate of problem with IVDD from the link above