Respiratory consequences of N95-type Mask usage in pregnant healthcare workers-a controlled clinical study
Antimicrobial Resistance and Infection Control (2015) - Comments
pubmed: 26579222  doi: 10.1186/s13756-015-0086-z  issn: 2047-2994 

Pearl Shuang Ye Tong, Anita Sugam Kale, Kailyn Ng, Amelia Peiwen Loke, Mahesh Arjandas Choolani, Chin Leong Lim, Yiong Huak Chan, Yap Seng Chong, Paul Anantharajah Tambyah, Eu-Leong Yong