Urology in the coal fields.
D003031:Coal; D004194:Disease; D004646:Emphysema; D006801:Humans; D011656:Pulmonary Emphysema / Q000150:complications*; D012829:Silicosis / Q000150:complications*; D014566:Urogenital System; D014570:Urologic Diseases; D014572:Urology
D003031:Coal
EMPHYSEMA, PULMONARY/complications; SILICOSIS/complications; UROGENITAL SYSTEM/diseases