function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barreto, Gabriel G. & Cantillo, Taimy & Costa-Rezende, Diogo H.', 1],
    ['Funez, Luís Adriano & Monteiro, Marcela', 1],
    ['Herrera, Mariana & Bandala, Victor M. & Montoya, Leticia', 1],
    ['Jarvis, Charlie', 2],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 5],
    ['Kibby, Geoffrey & Liimatainen, Kare', 1],
    ['Reschke, Kai & Lotz-Winter, Hermine & Fischer, Christian W.', 1],
    ['Shao, Shi-Cheng & Liu, Pei-Gui & Wei, Tie-Zheng', 2],
    ['Xu, Tai-Min & Sun, Yi-Fei & Liu, Shun & Song, Chang-Ge', 1],
    ['Yang, Cheng & Xu, Yu-Yan & Fan, Li', 2],
    ['Zhang, Yu-Zhuo & Liang, Zhi-Qun & Xie, Hui-Jing & Wu, Lu-Ling', 1],
    ['Zhao, Gui-Ping & Hu, Jia-Jun & Tuo, Yong-Lan & Li, Yu', 2],
    ['de la Fuente, Javier Isaac & García-Jiménez, Jesús', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);