[Number of chronic diseases and future duration of pilot's work].
Vlasov
V V
VV
D000328:Adult; D000337:Aerospace Medicine; D000367:Age Factors; D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013997:Time Factors
Chislo khronicheskikh zabolevaniĭ i predstoiashchaia prodolzhitel'nost' letnoĭ raboty.