[1] Univ Vermont, Burrell Coll Osteopath Med, San Jose, CA USA
[2] Univ Vermont, Larner Coll Med, San Jose, CA USA
[3] Stanford Univ, Stanford, CA 94305 USA
[4] Univ Iowa, Carver Coll Med, Iowa City, IA 52242 USA
[5] Stanford Univ, Med Ctr, Stanford, CA 94305 USA
[6] Nagoya Univ, Grad Sch Med, Nagoya, Aichi 4648601, Japan
[7] Cedars Sinai Med Ctr, Culver City, CA USA
[8] Xi An Jiao Tong Univ, Affiliated Hosp 2, Xian, Peoples R China
[9] Stanford Univ, Med Ctr, Palo Alto, CA 94304 USA