TY - GEN AU - Rivas-Ruiz,Rodolfo AU - Castelán-Martínez,Osvaldo D AU - Pérez,Marcela AU - Talavera,Juan O TI - [Clinical research XVII. χ(2) test, from the expected to the observed] SN - 2448-5667 PY - 2014///1103 KW - Biomedical Research KW - Chi-Square Distribution N1 - Publication Type: English Abstract; Journal Article ER -