function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arbabi, Masoud & Lotfollahi, Parisa & Abaii, Mansour', 1],
    ['Bahirai, Fereshteh & Jafari, Shahriar & Lotfollahi, Parisa', 1],
    ['Druciarek, Tobiasz & Lewandowski, Mariusz', 1],
    ['Ewing, Henry Ellsworth', 1],
    ['Flechtmann, Carlos H. W. & Etienne, Jean', 1],
    ['Gu, Xiao-Hui & Yang, Juan & Tan, Meng-Chao & Wang, Guo-Quan', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 2],
    ['Lotfollahi, Parisa & Irani-Nejad, Karim Haddad', 2],
    ['Manson, David Charles MacKenzie', 6],
    ['Skoracka, Anna & Macuk, Lucyna & Rakowski, Wojciech', 2],
    ['Soika, Grażyna & Kozak, Marcin', 2],
    ['Song, Zi-Wei & Xue, Xiao-Feng & Hong, Xiao-Yue', 3],
    ['XUE, XIAO-FENG & GUO, JING-FENG & HONG, XIAO-YUE', 4],
    ['XUE, XIAO-FENG & WANG, ZHEN & SONG, ZI-WEI & HONG, XIAO-YUE', 8],
    ['Xue, Xiao-Feng & Zhang, Zhi-Qiang', 22],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=69)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);