Familial sarcoidosis: epidemiological aspects with notes on a possible relationship to the chewing of pine pitch.
D006801:Humans; D008409:Mastication; D028223:Pinus; D012117:Resins, Synthetic / Q000633:toxicity*; D012507:Sarcoidosis / Q000209:etiology*
D012117:Resins, Synthetic
RESINS/toxicology; SARCOIDOSIS/etiology