PT - JOURNAL ARTICLE AU - Reginald Greene AU - Bernard Hoop AU - Homayoun Kazemi TI - Use of <sup>13</sup>N in Studies of Airway Closure and Regional Ventilation DP - 1971 Nov 01 TA - Journal of Nuclear Medicine PG - 719--723 VI - 12 IP - 11 4099 - http://jnm.snmjournals.org/content/12/11/719.short 4100 - http://jnm.snmjournals.org/content/12/11/719.full SO - J Nucl Med1971 Nov 01; 12