[
    {
        "$match": {
            "partnerShortCode": {
                "$in": []
            }
        }
    },
    {
        "$group": {
            "_id": "$partnerShortCode",
            "clinics": {
                "$push": {
                    "clinicName": "$name",
                    "clinicId": "$_id"
                }
            }
        }
    },
    {
        "$project": {
            _id:0,
            "partnerShortCode": "$_id",
            "clinics": 1
        }
    }
]