function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Harbach, Ralph E. & Howard, Theresa M.', 1],
    ['John F. Reinert & Ralph E. Harbach & Ian J. Kitching', 8],
    ['Keith Snow', 1],
    ['Le _ Goff, Gilbert & Brengues, Cécile & Robert, Vincent', 1],
    ['NATARAJAN, R. & GOPALAKRISHNAN, S. & SHRIRAM, A. N.', 3],
    ['Reinert, John F. & Harbach, Ralph E. & Kitching, Ian J.', 1],
    ['Rozo-Lopez, Paula & Mengual, Ximo', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);