A9-year-old girl is brought to the office by her mother who has noticed that the child’s neck looks “odd.” the girl states that it feels “like something is there,” indicating the base of the neck, but that she has no difficulty swallowing. a thorough examination reveals only a firm, nontender, and diffusely enlarged thyroid with no thrills or bruits. all parameters on a thyroid function panel are within normal limits. low levels of thyroid antibodies are present. what is this child’s most likely diagnosis?

Which of the following methods could be considered a "best practice" in terms of informing respondents how their answers to an on-line survey about personal information will be protected? respondents are informed that investigators will try to keep their participation confidential; however, confidentiality cannot be assured. respondents are informed that a research assistant will transfer all the research data to a password-protected computer that is not connected to the internet, via a usb flashdrive. the computer is located in a research team member's office. the investigator uses the informed consent process to explain her institution's method for guaranteeing absolute confidentiality of research data. the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed. the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed