function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Das, Lakshmi Rupa & Chattopadhyay, Pinaki & Dutta, Arun Kumar', 1],
    ['Filippova, Nina & Zvyagina, Elena & Rudykina, Elena', 2],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 3],
    ['Ma, Ao & Hu, Jia-Jun & Chen, Yue-Qu & Wang, Xin & Tuo, Yong-Lan', 4],
    ['Ma, Yuanhao & Liu, Ping & Zhao, Ziyue & Chen, Weimin', 2],
    ['Mu, Lisong & Bau, Tolgor', 2],
    ['Mu, Man & Huang, Hong-Yan & Huang, Ting & Yang, Shu-Da', 1],
    ['Tang, Song-Ming & Vadthanarat, Santhiti & He, Jun', 3],
    ['Zambrano-Forero, Cristian J & Davila-Giraldo, Lina R', 3],
    ['de la Fuente, Javier Isaac & García-Jiménez, Jesús', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);