共 50 条
- [33] DIFFICULTY OF CHOOSING A GOOD CONTROL-GROUP IN A RETROSPECTIVE STUDY REVUE D EPIDEMIOLOGIE ET DE SANTE PUBLIQUE, 1977, 25 (01): : 67 - 84
- [34] CONTROLLED GROUP DESIGNS IN BIOFEEDBACK RESEARCH - ASK WHAT DOES THE CONTROL-GROUP CONTROL FOR BIOFEEDBACK AND SELF-REGULATION, 1982, 7 (03): : 377 - 401
- [37] IMPROPER CONTROL-GROUP FOR ADOPTED-AWAY OFFSPRING AMERICAN JOURNAL OF PSYCHIATRY, 1982, 139 (01): : 140 - 140
- [40] FREQUENCY AND ULTRASONIC STUDY OF GYNECOMASTIA IN AN ADULT CONTROL-GROUP ACTA ENDOCRINOLOGICA, 1981, 97 : 255 - 255