function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bustamante-Gil, Carolina & Boltovskoy, Andrés & Rengefors, Karin', 10],
    ['Grizancic, Lana & Baricevic, Ana & Smodlaka Tankovic, Mirta', 8],
    ['Krakhmalnyi, Aleksandr F. & Krakhmalnyi, Maxim A.', 22],
    ['Krakhmalnyi, Maxim & Krakhmalnyi, Aleksandr & Terenko, Galyna', 1],
    ['Lewis, Jane & Taylor, Joe D. & Neale, Klaire', 4],
    ['Marino De Remes Lenicov, A. M. & Varela, G.', 2],
    ['Novis, Phil M. & Braidwood, Jasmine & Kilroy, Cathy', 1],
    ['Nunes, Caio Ceza da Silva & Susini-Ribeiro, Sylvia Maria Moreira', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    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);