TY - GEN AU - Gutiérrez Cruz,Oswaldo AU - Romero Sánchez,Guadalupe AU - Velasco Pérez,Luis TI - [Heterotopic pregnancy] SN - 0300-9041 PY - 2007///0119 KW - Adult KW - Female KW - Humans KW - Pregnancy KW - Pregnancy, Ectopic KW - diagnostic imaging KW - Ultrasonography N1 - Publication Type: Case Reports; Journal Article ER -