; (iii) the number of years on the job and a detailing of additional employment experience that was either performed concurrently alongside firefighting service, before, or anytime thereafter; (iv) (I) a measure of the number of fire incidents attended as well as the type of fire incidents (such as residential house fire or commercial fire); or (II) in the case of a firefighter who is unable to provide information on such number and type, an estimate of such number and type based on the method developed under subsection (d)(2); (v) a list of additional risk factors, including smoking or drug use, as determined relevant by the Secretary; and (vi) other physical examination and medical history information relevant to a cancer incidence study or general health of firefighters not available in existing cancer registries. (C) Any additional information that is deemed necessary by the Secretary. (2) Diagnoses and treatment In carrying out the data collection for purposes of inclusion under the Firefighter Registry, with respect to diagnoses and treatment of firefighters diagnosed with cancer, the Secretary shall enable the Firefighter Registry to link to State-based cancer registries, for a purpose described by clause (vi) or (vii) of section 399B(c)(2)(D) of the Public Health Service Act ( 42 U.S.C. 280e(c)(2)(D) ), to obtain information on— (A) administrative information, including date of diagnoses and source of information