[Various "pitfalls" in the performance of controlled randomized prospective studies].

Johnston, D

[Various "pitfalls" in the performance of controlled randomized prospective studies]. [electronic resource] - Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen May 1979 - 276-9 p. digital

Publication Type: Journal Article

0009-4722


Humans
Methods
Peptic Ulcer--surgery
Probability
Prospective Studies
Thinking
Vagotomy