An investigator reviewed the medical records of 200 children seen for care at Boston Medical Center in the past year who were between ages of 8 and 12 years old and identified 40 with asthma. He also identified 40 children of the same age who were free of asthma. Each child and his or her family were interviewed to assess whether there might be an association between exposure to second-hand smoke and asthma. Classify this study as a

Astudy that involves interviews of adults is eligible for expedited review. the researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. no additional changes are planned. which of the following statements about review of the revised protocol is accurate? the research would only be eligible for expedited review if the adolescents are capable of understanding the same consent forms used for the adult population.the research would only be eligible for expedited review if the adolescents have been declared to be emancipated minors.the new research would need full review by a convened irb because children are a protected population.unless the nature of the questions would raise the level of risk to > minimal for adolescents, the research would still qualify for expedited review.

State law requires you to inform the secretary of state''s office of an address change within days.

What does one prolonged blast and one short blast mean?