Author's Organization:Sakai City Institute of Public Health Shukuin Public Health Center, Sakai City Shukuin Public Health Center, Sakai City Shukuin Public Health Center, Sakai City Shukuin Public Health Center, Sakai City Otori Public Health Center, Sakai City Kanaoka Public Health Center, Sakai City Sakai City Institute of Public Health Sakai City Institute of Public Health
Published: February 15, 1991Received: May 29, 1990Available on J-STAGE: February 15, 2008Accepted: October 11, 1990
Advance online publication: -
Revised: -