Funding for this research was provided by:
Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT KAKENHI Grant Number 22791820)
grants for intractable disease from the Japanese Ministry of Health, Labour, and Welfare
Received: 7 January 2018
Accepted: 26 February 2018
First Online: 9 April 2018
: NA is a Lecturer at the Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan. YK is a Director at the Division of General Medicine, Department of Internal Medicine, Sakai City Medical Center, 1-1-1 Ebaraji-cho, Nishi-ku, Sakai 593-8304, Japan. HS is a Professor and Chairman at the Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan.
: These studies were approved by the ethics committee of the Hyogo College of Medicine (no. 758), and all subjects provided written informed consent for the participation in these studies.
: Not applicable
: NA and YK declare that they have no competing interests. HS has received consulting fees, lecture fees, and/or honoraria from Mitsubishi Tanabe Pharma, Chugai Pharmaceutical, Astellas Pharma, and Kissei Pharmaceutical and has received research grants from Chugai Pharmaceutical and Astellas Pharma.
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