Structural nested models, g-estimation, and the healthy worker effect:  the promise (mostly unrealized) and the pitfalls.
Marshall M
MM
Joffe
D001336:Automobiles; D005260:Female; D006801:Humans; D007219:Industrial Oils / Q000009:adverse effects*; D008297:Male; D008669:Metallurgy / Q000706:statistics & numerical data*; D015233:Models, Statistical; D009784:Occupational Diseases / Q000453:epidemiology*