A Language Barrier, Abdominal Pain, and Double Vision
Lancet 357:2022, Basnyat,B.,et al, 2001
Irregular Breathing
In Internal Medicine, Little, Brown & Co, Boston, 3rd Ed, p. 573-574, Cherniack,N.S., 1990
High-Altitude Retinopathy
JAMA 245:581-586, McFadden,D.M.,et al, 1981