function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Colombero, Simone & Pavia, Giulio & Carnevale, Giorgio', 2],
    ['Don E. Wilson & Thomas E. Lacher, Jr & Russell A. Mittermeier', 1],
    ['Gbif. Org, Occdownload', 1],
    ['Goodwin, George G.', 1],
    ['Jackson, Stephen M. & Jansen, Justin J. F. J.', 1],
    ['Kryštufek, Boris & Naderi, Morteza & Janžekovič, Franc', 2],
    ['Popov, Vasil V.', 1],
    ['Wilson, Don E. & Reeder, DeeAnn', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    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);