Question: When did the player who died of cardiac arrest during practice play for the Celtics?

Context articles: Haleh Sahabi
Sinoatrial arrest
Toy World
Pulseless electrical activity
1993–94 Boston Celtics season
Ventricular fibrillation
Cardiac Arrest Registry to Enhance Survival
Reggie Lewis
History of cardiopulmonary resuscitation
Traumatic cardiac arrest

Haleh Sahabi (4 February 1958 – 1 June 2011) was an Iranian humanitarian and democracy activist.
 She was the daughter of former Iranian MP and veteran opposition figure Ezzatollah Sahabi, and the granddaughter of Yadollah Sahabi.
 She died at her father's funeral from cardiac arrest, the cause of her cardiac arrest however is disputed.
Sinoatrial arrest (also known as sinus arrest or sinus pause) is a medical condition wherein the sinoatrial node of the heart transiently ceases to generate the electrical impulses that normally stimulate the myocardial tissues to contract and thus the heart to beat.
 It is defined as lasting from 2.0 seconds to several minutes.
 Since the heart contains multiple pacemakers, this interruption of the cardiac cycle generally lasts only a few seconds before another part of the heart, such as the atrio-ventricular junction or the ventricles, begins pacing and restores the heart action.
 This condition can be detected on an electrocardiogram (ECG) as a brief period of irregular length with no electrical activity before either the sinoatrial node resumes normal pacing, or another pacemaker begins pacing.
 If a pacemaker other than the sinoatrial node is pacing the heart, this condition is known as an escape rhythm.
 If no other pacemaker begins pacing during an episode of sinus arrest it becomes a cardiac arrest.
 This condition is sometimes confused with sinoatrial block, a condition in which the pacing impulse is generated, but fails to conduct through the myocardium.
 Differential diagnosis of the two conditions is possible by examining the exact length of the interruption of cardiac activity.
Toy World is the second album released by Cardiacs (including "The Obvious Identity", released on cassette the previous year under the band name "Cardiac Arrest").
 The cassette is a mixture of older songs by the earlier Cardiac Arrest lineup and newer songs by the then-current Cardiacs lineup.
 This was the last album to feature keyboard player/backing singer Colvin Mayers, and the first to feature saxophonist/backing singer/occasional keyboard player Sarah Cutts (who on all future releases would be referred to as Sarah Smith).
Pulseless electrical activity (PEA), also known as electromechanical dissociation, refers to cardiac arrest in which the electrocardiogram shows a heart rhythm that should produce a pulse, but does not.
 Pulseless electrical activity is found initially in about 55% of people in cardiac arrest.
The 1993–94 NBA season was the 48th season for the Boston Celtics in the National Basketball Association.
 This season marked the first since 1978–79 that the Celtics failed to qualify for the NBA Playoffs (a streak of 14 seasons), finishing fifth in the Atlantic Division with a 32–50 record.
 Tragedy struck the team prior to the season when star forward and team captain Reggie Lewis died of cardiac arrest during practice.
 The absence of Lewis, and the retirements over the previous two seasons of Larry Bird and Kevin McHale contributed to the poor season.
 The Celtics had a 7-game winning streak in January, but also had a winless month in February where they suffered a 13-game losing streak.
 Rookie Dino Radja was named to the All-Rookie Second Team.
 Following the season, longtime Celtics center Robert Parish signed as an unrestricted free agent with the Charlotte Hornets, and Kevin Gamble signed with the Miami Heat.
Ventricular fibrillation (V-fib or VF) is when the heart quivers instead of pumping due to disorganized electrical activity in the ventricles.
 It is a type of cardiac arrhythmia.
 Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse.
 This is followed by death in the absence of treatment.
 Ventricular fibrillation is found initially in about 10% of people in cardiac arrest.
The Cardiac Arrest Registry to Enhance Survival or CARES was initiated in 2004 as an agreement between the Center for Disease Control and Prevention and the Department of Emergency Medicine at Emory University.
 It is a simple but powerful database that allows cities to collect a small set of performance measures from 9-1-1, first responders, fire departments, and Emergency Medical Services, and link it with outcome data from hospitals.
 This data enables cities to perform internal benchmarking and improve their response to cardiac arrest by strengthening the chain of survival in their community.
 Because most EMS systems don't measure their response effectively, they are unable to implement change in an effective manner.
 Since the program's inception, survival from cardiac arrest in the city of Atlanta has increased from 3% to 15%.
 For the last half of 2007, survival in Atlanta increased to 31.2%.
Reggie Lewis (November 21, 1965 – July 27, 1993) was an American professional basketball player for the National Basketball Association's Boston Celtics from 1987 to 1993.
Cardiopulmonary resuscitation, also known by the acronym CPR is an emergency procedure performed in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest.
 It is a basic but proven first aid skill, practiced throughout the world.
 It is an effective method of keeping a victim of cardiac arrest alive long enough for definitive treatment to be delivered (usually defibrillation and intravenous cardiac drugs).
Traumatic cardiac arrest (TCA) is a condition in which the heart has ceased to beat due to blunt or penetrating trauma, such as a stab wound to the thoracic area.
 It is a medical emergency which will always result in death without prompt advanced medical care.
 Even with prompt medical intervention, survival without neurological complications is rare.
 There are no definitive protocols in place in how to manage traumatic cardiac arrest, but certain people benefit from the use of a thoracotomy in order to gain access and repair damage from the injury.
 Traumatic cardiac arrest is a complex form of cardiac arrest often derailing from Advanced Cardiac Life Support in the sense that the emergency team must first establish the cause of the traumatic arrest and reverse these effects, for example hypovolemia and haemorrhagic shock due to a penetrating injury.