function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arya, C. P. & Kumar, A. Manoj & Pradeep, C. K. & Parra, Luis A.', 1],
    ['Bashir, Hira & Fatima, Nadia & Izhar, Aiman', 1],
    ['He, Mao-Qiang & Chuankid, Boontiya & Hyde, Kevin D.', 2],
    ['Jarvis, Charlie', 4],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 2],
    ['Petersen, Ronald H. & Hughes, Karen W.', 1],
    ['Tarafder, Entaj & Dutta, Arun Kumar & Karunarathna, Samantha C.', 4],
    ['Zhang, Chun-Lan & Jin, Zheng-Wen & Sun, Can & Moodley, Odeshnee', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);