Risk factors for bronchiectasis in patients with chronic obstructive pulmonary disease: a systematic review and meta-analysis XinXin Zhang; LiJian Pang; XiaoDong Lv; HaoYang Zhang;

A meta-analysis on the efficacy of endoscopic ultrasonography for treatment of pancreatic cancer Min Xuan; Na Li; Chunyan Wu;

Seasonality as a risk factor for deaths in Parkinson's disease Marcelo C.M. Fonseca; Dayan Sansone; Daniela Farah; Ana Claudia Fiorini; Carla A. Scorza; Fulvio A. Scorza;