TY  - GEN
AU  - Grunkemeier,G L
AU  - Starr,A
TI  - Alternatives to randomization in surgical studies
SN  - 0966-8519
PY  - 1994///0125
KW  - Ethics, Medical
KW  - Heart Valve Prosthesis
KW  - Heart Valves
KW  - surgery
KW  - Humans
KW  - Physician-Patient Relations
KW  - Product Surveillance, Postmarketing
KW  - Random Allocation
KW  - Randomized Controlled Trials as Topic
KW  - Selection Bias
N1  - Publication Type: Journal Article
ER  -