function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jarvis, Charlie', 2],
    ['Karimi, Omid & Thilini Chethana, K. W. & Farias, Antonio R. G.', 1],
    ['Ma, Hai-Xia & Vasilyeva, Larissa & Li, Yu', 1],
    ['Pan, Xiao-Yan & Song, Zi-Kun & Qu, Zhi & Liu, Tie-Dong', 3],
    ['Sharathchandra, Kodandoor & Mahadevakumar, Shivannegowda', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 8],
    ['Wu, You-Peng & Pi, Yin-Hui & Long, Si-Han & Liu, Li-Li', 4],
    ['Zambrano-Forero, Cristian J & Davila-Giraldo, Lina R', 3],
    ['de la Fuente, Javier Isaac & García-Jiménez, Jesús', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);