function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ebrahimi, E. & Schmid, C. & Wahis, R.', 12],
    ['Egger, Christian Schmid- & Liebig, Wolf-Harald', 4],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 4],
    ['Enayatnia, Masoumeh & Rakhshani, Ehsan & Kroupa, Alexander S.', 18],
    ['Gadallah, Neveen S. & Schmid-Egger, Christian', 1],
    ['John M. Leavengood, Jr. & Waichert, Cecilia & Rodriguez, Juanita', 1],
    ['Kurczewski, Frank E. & West, Rick C. & Pitts, James P.', 1],
    ['Kurczewski, Frank E. & West, Rick C. & Waichert, Cecilia', 1],
    ['Loktionov, V. M.', 4],
    ['Madl, Michael & P, Cryptocheilus & D, Cyphononyx', 2],
    ['Schmid, Christian & Olszewski, Piotr', 1],
    ['Wolf, H. & D-R', 3],
    ['Yildirim, Erol & Tezcan, Serdar', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);