Prospective GERiatric Observational (ProGERO) study: cohort design and preliminary results - Saraiva, Marcos Daniel; Rangel, Luis Fernando; Cunha, Julia Lusis Lassance; Rotta, Thereza Cristina Ariza; Douradinho, Christian; Khazaal, Eugenia Jatene Bou; Aliberti, Márlon Juliano Romero; Avelino-Silva, Thiago Junqueira; Apolinario, Daniel; Suemoto, Claudia Kimie; Jacob Filho, Wilson (Bmc geriatrics, 2020)