Department;
of;
Pathology,;
People's;
Hospital,;
Peking;
University,;
Beijing,;
Peoples;
Republic;
of;
China;
Department;
of;
Pathology,;
S.H.;
Ho;
Foundation;
Research;
Laboratories;
in;
Pathology;
Department;
of;
Obstetrics;
and;
Gynecology,;
Hong;
Kong;
Jockey;
Club;
Clinical;
Research;
Centre,;
The;
University;
of;
Hong;
Kong,;
Hong;
Kong,;
Peoples;
Republic;
of;
China;