Erratum

Following publication of the original article [1] it was brought to our attention that the sequence of the author affiliations was incorrectly ordered. In the original article the sequence appears as follows:

1Guang’anmen Hospital, China Academy of Chinese Medical Sciences, No.5 Beixiange Street, Xicheng District, Beijing 100053, China

2Graduate School, Beijing University of Chinese Medicine, No.11 Beisanhuan East Road, Chaoyang District, Beijing 100029, China

However, the corrected sequence should appear as:

1Graduate School, Beijing University of Chinese Medicine, No.11 Beisanhuan East Road, Chaoyang District, Beijing, 100029 China

2Guang’anmen Hospital, China Academy of Chinese Medical Sciences, No.5 Beixiange Street, Xicheng District, Beijing, 100053 China

Please also note that based on this new sequence, the author affiliations should also be updated to the following:

Jiangquan Liao1,2, Yongmei Liu2 and Jie Wang2*