function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jarvis, Charlie', 1],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 33],
    ['Kiyashko, Anna A. & Malysheva, Ekaterina F. & Antonín, Vladimír', 5],
    ['Ramírez, Natalia A. & Niveiro, Nicolás', 2],
    ['S, Jadson José & Oliveira, ouza de & Capelari, Marina', 15],
    ['Zambrano-Forero, Cristian J & Davila-Giraldo, Lina R', 3],
    ['Zhang, Qiu-Yue & Si, Jing & Li, Hai-Jiao', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);