Forced Expiratory Volume in 6 s (FEV6) and FEV1/FEV6 Values as a Viable Alternative for Forced Vital Capacity (FVC) and FEV1/FVC Values During Pregnancy in South East Nigeria: A Preliminary Study.

Forced Expiratory Volume in 6 s (FEV6) and FEV1/FEV6 Values as a Viable Alternative for Forced Vital Capacity (FVC) and FEV1/FVC Values During Pregnancy in South East Nigeria: A Preliminary Study.