[1] Caja Costarricense Seguro Social, Resp Dept, Hosp Nacl Ninos, San Jose, Costa Rica
[2] Caja Costarricense Seguro Social, Emergency Dept, Hosp Nacl Ninos, San Jose, Costa Rica
[3] Caja Costarricense Seguro Social, Gen Pediat Dept, Hosp Nacl Ninos, San Jose, Costa Rica
[4] Hosp CIMA San Jose, Resp Dept, San Jose, Costa Rica