function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Costa-Silva, Vinícius & Strümpher, Werner P.', 7],
    ['Cushman, R. A.', 1],
    ['Dupuis, Fabien', 1],
    ['Freese, Edwin L. & Veal, Doug A. & Lago, Paul K.', 5],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 4],
    ['Horstmann, K.', 1],
    ['Huchet, Jean-Bernard & Costa-Silva, Vinicius Da', 2],
    ['Johnston, M. Andrew & Waite, Evan S. & Wright, Ethan R', 1],
    ['Kalawate, Aparna S. & Strümpher, Werner P.', 24],
    ['Pittino, Riccardo', 1],
    ['Strümpher, Werner P. & Kalawate, Aparna S.', 12],
    ['Taboada-Verona, Carlos & Sermeño-Correa, Carlos', 1],
    ['Ziani, Stefano & Bezděk, Aleš & Branco, Tristão', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    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);