These cases had an aerage follow-up of 47 months (range, 24 –76 months).
这些病例的随访期是47个月（范围是，24-76个月）。
OSHA's data collection initiatie is conducted each year to proide the agency with a clearer picture of those establishments with higher than aerage injury and illness rates.
联邦OSHA每年年初都会发布类似预算，使经销商对具有高伤残率和致病率的工种和工地心中有数。
OSHA's data collection initiatie is conducted each year to proide the agency with a clearer picture of those establishments with higher than aerage injury and illness rates.
联邦OSHA每年年初都会发布类似预算，使经销商对具有高伤残率和致病率的工种和工地心中有数。
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