[1] Shriners Hosp Children, Montreal, PQ, Canada
[2] Univ British Columbia, Med Genet, Vancouver, BC, Canada
[3] Childrens & Womens Hlth Ctr BC, Vancouver, BC, Canada
[4] Arthrogryposis Multiplex Congenita Support Inc, Spartanburg, SC USA
[5] Univ British Columbia, Vancouver, BC, Canada
[6] Shriners Hosp Children Philadelphia, Orthoped, Philadelphia, PA USA