function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bustamante-Gil, Carolina & Boltovskoy, Andrés & Rengefors, Karin', 1],
    ['Grizancic, Lana & Baricevic, Ana & Smodlaka Tankovic, Mirta', 17],
    ['Hernández-Becerril, David U. & Pichardo-Velarde, Jorge G.', 11],
    ['Lewis, Jane & Taylor, Joe D. & Neale, Klaire', 1],
    ['Mead, A. & Carlton, J. T. & Griffiths, C. L. & Rius, M.', 1],
    ['Mussai, Prakash & Larsen, Jacob & Jeewon, Rajesh', 1],
    ['Nunes, Caio Ceza da Silva & Susini-Ribeiro, Sylvia Maria Moreira', 7],
    ['Tabara, Daniel & Slimani, Hamid & Mare, Silvia', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);