function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Handal, Adil Y. & Torstensson, Anders & Wulff, Angela', 1],
    ['Deng, Li-Ying & Blanco, Saúl & Liu, Bing & Quan, Si-Jin', 1],
    ['Ferreira da Silva, Juliana & Oliveira, Maria Angélica', 3],
    ['Grizancic, Lana & Baricevic, Ana & Smodlaka Tankovic, Mirta', 1],
    ['Silva, Weliton Jose da & Jahn, Regine & Menezes, Mariangela', 1],
    ['Vijver, Bart Van De & Zidarova, Ralitsa', 5],
    ['Williams, David M. & Liu, Bing & Taxböck, Lukas', 3],
    ['Xu, San-Mei & Liu, Bing & Rioual, Patrick & Yi, Man-Qi', 1],
    ['Zidarova, Ralitsa & Kopalová, Kateŕina & Vijver, Bart Van De', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);