function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carreiro-Silva, M. & Ocaña, O. & Stankovic´, D & Sampaio, Í', 1],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 4],
    ['Kise, Hiroki & Montenegro, Javier & Santos, Maria E. A.', 5],
    ['Kise, Hiroki & Reimer, James Davis', 3],
    ['Low, Martyn E. Y. & Reimer, James Davis', 1],
    ['Low, Martyn E. Y. & Sinniger, Frederic & Reimer, James Davis', 4],
    ['Ocaña, Oscar & Çinar, Melih Ertan', 2],
    ['Philipp, Nicholas A. & Fautin, Daphne G.', 4],
    ['Reimer, James D. & Poliseno, Angelo & Hoeksema, Bert W.', 2],
    ['Reimer, James Davis & Wee, Hin Boo & Jr, Ang Put', 1],
    ['Ryland, John S. & Ward, Helen', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);