胃切除術後の吻合部潰瘍 (特集 再手術--予防・適応・手術手技)

Ravens have benefitted from resource subsidies provided by humans so much that their population has increased by over 800% in the western Mojave desert over the last 50 years. Our food waste is an especially large subsidy. Raven predation is one of the greatest threats to desert tortoise survival in... View More