Ohio's hospitals have seen nearly one-third of their revenue evaporate from suspending non-essential procedures while gearing up for the coronavirus surge – a collective negative impact of $1.2 billion per month. Annual revenue is about $48 billion for 236 hospitals and 14 systems, according to the Ohio Hospital Association, which is collecting data daily from its members on the impact of the pandemic. Many community hospitals already were on “razor-thin margins” before the crisis, association…