Which of the following childhood respiratory diseases has increased dramatically over the past few decades?

Which of the following pairs of mother and fetus shows the most likely potential for initiating HDFN in the fetus?

Mother Fetus a. Group A, Rh positive Group O, Rh positive b. Group B, Rh negative Group O, Rh positive c. Group AB, Rh positive Group A, Rh negative d. Group A, Rh negative Group AB, Rh negative

Describe the grid cutoff that occurs if the central ray is angled toward the grid's lead strips

a. On both sides of the image b. Across the entire image, but more noticeable on one side c. Evenly across the entire image