PT - JOURNAL ARTICLE AU - Johannes Czernin TI - The Annual Journal Impact Factor Saga AID - 10.2967/jnumed.121.262860 DP - 2021 Jul 01 TA - Journal of Nuclear Medicine PG - jnumed.121.262860 4099 - http://jnm.snmjournals.org/content/early/2021/07/08/jnumed.121.262860.short 4100 - http://jnm.snmjournals.org/content/early/2021/07/08/jnumed.121.262860.full