[1] Baylor Coll Med, Dept Dermatol, Houston, TX 77030 USA
[2] NYU, Mt Sinai Sch Med, New York, NY USA
[3] Columbia Univ, New York, NY USA
[4] NYU, Sch Med, New York, NY USA
[5] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[6] Univ Utah, Sch Med, Salt Lake City, UT USA
[7] Univ Calif Los Angeles, Los Angeles, CA USA
[8] Wake Forest Univ, Bowman Gray Sch Med, Winston Salem, NC USA
[9] Stanford Univ, Sch Med, Stanford, CA 94305 USA
[10] Univ Penn, Sch Med, Dept Dermatol, Philadelphia, PA 19104 USA
[11] Tufts Univ, Sch Med, Boston, MA 02111 USA
[12] SUNY Buffalo, Sch Med & Biomed Sci, Buffalo, NY 14260 USA
[13] Case Western Reserve Univ, Sch Med, Cleveland, OH USA
[14] Johns Hopkins Green Spring, Lutherville Timonium, MD USA
[15] Henry Ford Hosp, W Bloomfield, MI USA
[16] Univ Miami, Miami, FL USA
[17] Prob Med Res, Waterloo, ON, Canada
[18] Natl Psoriasis Fdn, Portland, OR USA
[19] Univ Calif San Diego, Sch Med, Dept Pediat, La Jolla, CA 92093 USA
[20] Univ Calif San Diego, Sch Med, Div Dermatol, Dept Med, La Jolla, CA 92093 USA
[21] Univ Calif San Diego, Div Rheumatol Allergy & Immunol, La Jolla, CA 92093 USA
[22] Univ Penn, Sch Med, Ctr Clin Epidemiol & Biostat, Philadelphia, PA 19104 USA
[23] Univ Rochester, Sch Med & Dent, Dept Med Allergy Immunol & Rheumatol, Rochester, NY USA
[24] So Illinois Sch Med, Div Dermatol, Springfield, IL USA