function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acosta, Luis E. & Fet, Victor', 1],
    ['Kovařík, František & Lowe, Graeme', 1],
    ['Kovařík, František & Lowe, Graeme & Elmi, Hassan Sh Abdirahman', 19],
    ['Kovařík, František & Lowe, Graeme & Plíšková, Jana', 12],
    ['PRENDINI, LORENZO', 1],
    ['Prendini, Lorenzo & Bird, Tharina L.', 6],
    ['Prendini, Lorenzo & Esposito, Lauren A.', 3],
    ['Siyam, Manal & Dunlop, Jason A. & Kovarik, Frantisek', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);