TY  - JOUR 
T1  - Loss to follow-up and missing data: important issues that can affect your study results
JO  - Jornal Brasileiro de Pneumologia
A1  - Ferreira, Juliana Carvalho
A1  - Patino, Cecilia Maria
SN  - 1806-3713
UL  - 10.1590/1806-3713/e20190091
VL  - 45 
Y1  - 2019
PB  - Brasil 
ER  -