At the time of editing the first issue of 2015, Volume 30 Number 1 of the Journal of Korean Medical Science (JKMS), the editors and editorial staffs heartfully thank all authors and reviewers for their contribution to publication. Summarizing the journal statistics from December 1st in 2013 to December 1st in 2014, of total 1,340 submissions, JKMS have published 340 articles and accepted 58 articles to be published. About 75% of total submissions were rejected on editorial or peer review, and 3% were withdrawn by authors. For fair and qualified review, JKMS invited 625 specialists in medical and biological fields as peer reviewers. The editor reviewed reviewers' responses considering both efforts and contents and scored them on a scale of 1 (poor) to 5 (excellent). Of 519 reviewers, 6 was evaluated as score 5, 87 as score 4, 317 as score 3, 105 as score 2, and 4 as score 1. Top reviewers, who got ≥ score 4 or reviewed ≥ 3 times in 2014, are marked with an asterisk on the following reviewer list.