Anesthesiologists' experience varied widely from residents to senior doctors, though all procedures were performed under the supervision of senior doctors.
La experiencia del anestesiólogo varió mucho de residentes a médicos con más experiencia, aunque todos los procedimientos hayan sido hechos bajo la supervisión de médicos con experiencia.
A experiência do anestesiologista variou muito de residentes a médicos mais experientes, embora todos os procedimentos tenham sido feitos sob a supervisão de médicos experientes.