ABN stands for Advanced Beneficiary Notification. An ABN must be signed prior to providing a Medicare service or test to document that the patient is willing to assume responsibility for payment of services that Medicare may not cover when subject to either National or Local Coverage Determinations (NCD) or (LCD).
Chinchillas are crepuscular (most active around dawn and dusk) rodents, slightly larger and more robust than ground squirrels. They are native to the Andes mountains in South America and live in colonies called  herds  at high elevations up to 4,270 m (14,000 ft).
Shedding & Grooming a Chinchilla. Every three months a chinchilla will shed its fur, this sounds more alarming than it actually is. Chinchilla fur is released slowly just like we loose hair strands on a daily basis. The difference is chinchillas shed a lot of fur due to them having so many hairs per follicle. On average humans have three hairs per follicle, whereas a chinchilla has up to eighty hairs per follicle, hence a lot of fur being shed.