During the late nd trimester

The questionnaire elicited information on demographic and socioeconomic status; outdoor environment (live in the same building or next door to a dry-cleaning shop, an industrial plant, car repair shop, restaurant, bus depot, crossroad, or incinerator); quality of the indoor environment (intensity of outdoor traffic, types of industrial activity 'PF299804' near home, frequency of opening the window in warmer months, domestic heating method (by hot water pipe radiator, coal stove, electric heater, or forced hot air vents), fuel types (coal stove at home, coal stove in the basement, gas, wood, being supplied with town central heating, or electricity, and amount of vehicular traffic outside the room in which the mothers spent the majority of time at home); active and passive smoking history (number persons ribosomal RNA smoke cigarettes, cigars, pipes or marijuana, respectively, at home or at work, as well as hours of exposure per day and months of exposure during pregnancy); dietary intake of PAH-containing foods (frequency of eating smoked, grilled, blackened items, respectively); and other daily activity patterns (burning candles at home, number of hours spent indoors, outdoors, and in mass transit, respectively; mode of transportation during pregnancy; and cooking method including daily use of exhaust fan over cooking stove). The questions regarding and dietary PAH intake frequency were asked only during the second and third trimesters.